diff --git a/Cargo.lock b/Cargo.lock
index 19c0331..dae9310 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3303,6 +3303,7 @@ dependencies = [
  "poise",
  "reqwest",
  "serenity",
+ "thiserror",
  "tokio",
  "youmubot-db",
  "youmubot-db-sql",
diff --git a/youmubot-core/src/admin/mod.rs b/youmubot-core/src/admin/mod.rs
index 8df2c39..2c766e2 100644
--- a/youmubot-core/src/admin/mod.rs
+++ b/youmubot-core/src/admin/mod.rs
@@ -5,10 +5,7 @@ use serenity::{
         macros::{command, group},
         Args, CommandResult,
     },
-    model::{
-        channel::{Channel, Message},
-        id::UserId,
-    },
+    model::channel::{Channel, Message},
 };
 use soft_ban::{SOFT_BAN_COMMAND, SOFT_BAN_INIT_COMMAND};
 use youmubot_prelude::*;
@@ -69,7 +66,7 @@ async fn clean(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult {
 #[max_args(2)]
 #[only_in("guilds")]
 async fn ban(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult {
-    let user = args.single::<UserId>()?.to_user(&ctx).await?;
+    let user = args.single::<UserId>()?.0.to_user(&ctx).await?;
     let reason = args.single::<String>().map(|v| format!("`{}`", v)).ok();
     let dmds = args.single::<u8>().unwrap_or(0);
 
@@ -105,7 +102,7 @@ async fn ban(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult {
 #[num_args(1)]
 #[only_in("guilds")]
 async fn kick(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult {
-    let user = args.single::<UserId>()?.to_user(&ctx).await?;
+    let user = args.single::<UserId>()?.0.to_user(&ctx).await?;
 
     msg.reply(&ctx, format!("🔫 Kicking user {}.", user.tag()))
         .await?;
diff --git a/youmubot-core/src/admin/soft_ban.rs b/youmubot-core/src/admin/soft_ban.rs
index cb41974..5a8239e 100644
--- a/youmubot-core/src/admin/soft_ban.rs
+++ b/youmubot-core/src/admin/soft_ban.rs
@@ -3,10 +3,7 @@ use chrono::offset::Utc;
 use futures_util::{stream, TryStreamExt};
 use serenity::{
     framework::standard::{macros::command, Args, CommandResult},
-    model::{
-        channel::Message,
-        id::{GuildId, RoleId, UserId},
-    },
+    model::{channel::Message, id},
 };
 use youmubot_prelude::*;
 
@@ -19,7 +16,7 @@ use youmubot_prelude::*;
 #[max_args(2)]
 #[only_in("guilds")]
 pub async fn soft_ban(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult {
-    let user = args.single::<UserId>()?.to_user(&ctx).await?;
+    let user = args.single::<UserId>()?.0.to_user(&ctx).await?;
     let data = ctx.data.read().await;
     let duration = if args.is_empty() {
         None
@@ -81,7 +78,7 @@ pub async fn soft_ban(ctx: &Context, msg: &Message, mut args: Args) -> CommandRe
 #[num_args(1)]
 #[only_in("guilds")]
 pub async fn soft_ban_init(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult {
-    let role_id = args.single::<RoleId>()?;
+    let role_id = args.single::<RoleId>()?.0;
     let data = ctx.data.read().await;
     let guild = msg.guild_id.unwrap().to_partial_guild(&ctx).await?;
     // Check whether the role_id is the one we wanted
@@ -152,10 +149,10 @@ pub async fn watch_soft_bans(cache_http: impl CacheHttp, data: AppData) {
 
 async fn lift_soft_ban_for(
     cache_http: impl CacheHttp,
-    server_id: GuildId,
+    server_id: id::GuildId,
     server_name: &str,
-    ban_role: RoleId,
-    user_id: UserId,
+    ban_role: id::RoleId,
+    user_id: id::UserId,
 ) -> Result<()> {
     let m = server_id.member(&cache_http, user_id).await?;
     println!(
diff --git a/youmubot-core/src/fun/mod.rs b/youmubot-core/src/fun/mod.rs
index aacf08f..7c838b2 100644
--- a/youmubot-core/src/fun/mod.rs
+++ b/youmubot-core/src/fun/mod.rs
@@ -7,7 +7,7 @@ use serenity::{
         macros::{command, group},
         Args, CommandResult,
     },
-    model::{channel::Message, id::UserId},
+    model::channel::Message,
     utils::MessageBuilder,
 };
 use youmubot_prelude::*;
@@ -159,7 +159,7 @@ async fn name(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult {
     let user_id = if args.is_empty() {
         msg.author.id
     } else {
-        args.single::<UserId>()?
+        args.single::<UserId>()?.0
     };
 
     let user_mention = if user_id == msg.author.id {
diff --git a/youmubot-osu/src/discord/app_commands.rs b/youmubot-osu/src/discord/app_commands.rs
index 1023d00..4062e0a 100644
--- a/youmubot-osu/src/discord/app_commands.rs
+++ b/youmubot-osu/src/discord/app_commands.rs
@@ -25,7 +25,7 @@ async fn check<T: AsRef<crate::discord::Env> + Sync>(
         ctx.author(),
         None,
         osu_id,
-        member,
+        member.map(|m| m.user.id),
         mods,
         style,
     )
diff --git a/youmubot-osu/src/discord/mod.rs b/youmubot-osu/src/discord/mod.rs
index b1687d7..43bb3c3 100644
--- a/youmubot-osu/src/discord/mod.rs
+++ b/youmubot-osu/src/discord/mod.rs
@@ -8,14 +8,14 @@ use crate::{
 };
 use rand::seq::IteratorRandom;
 use serenity::{
-    all::{ChannelId, Member, Mention},
+    all::ChannelId,
     builder::{CreateMessage, EditMessage},
     collector,
     framework::standard::{
         macros::{command, group},
         Args, CommandResult,
     },
-    model::channel::Message,
+    model::{channel::Message, id},
     utils::MessageBuilder,
 };
 use std::{str::FromStr, sync::Arc};
@@ -329,14 +329,7 @@ pub async fn save(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult
 pub async fn forcesave(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult {
     let data = ctx.data.read().await;
     let osu = data.get::<OsuClient>().unwrap();
-    let target = match args.single::<Mention>()? {
-        Mention::User(id) => id,
-        m => {
-            msg.reply(&ctx, format!("Expected user_id, got {}", m))
-                .await?;
-            return Ok(());
-        }
-    };
+    let target = args.single::<UserId>()?.0;
 
     let username = args.quoted().trimmed().single::<String>()?;
     let user: Option<User> = osu
@@ -619,61 +612,29 @@ pub async fn last(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult
 pub async fn check(ctx: &Context, msg: &Message, mut args: Args) -> CommandResult {
     let data = ctx.data.read().await;
     let env = data.get::<Env>().unwrap();
-    let bm = load_beatmap(&env, Some(msg), msg.channel_id).await;
 
-    match bm {
-        None => {
-            msg.reply(&ctx, "No beatmap queried on this channel.")
-                .await?;
-        }
-        Some((bm, mods_def)) => {
-            let mods = args.find::<Mods>().ok().or(mods_def).unwrap_or(Mods::NOMOD);
-            let b = &bm.0;
-            let m = bm.1;
-            let style = args
-                .single::<ScoreListStyle>()
-                .unwrap_or(ScoreListStyle::Grid);
-            let username_arg = args.single::<UsernameArg>().ok();
-            let user_id = match username_arg.as_ref() {
-                Some(UsernameArg::Tagged(v)) => Some(*v),
-                None => Some(msg.author.id),
-                _ => None,
-            };
-            let user = to_user_id_query(username_arg, &env, &msg.author).await?;
-
-            let osu = data.get::<OsuClient>().unwrap();
-
-            let user = osu
-                .user(user, |f| f)
-                .await?
-                .ok_or_else(|| Error::msg("User not found"))?;
-            let mut scores = osu
-                .scores(b.beatmap_id, |f| f.user(UserID::ID(user.id)).mode(m))
-                .await?
-                .into_iter()
-                .filter(|s| s.mods.contains(mods))
-                .collect::<Vec<_>>();
-            scores.sort_by(|a, b| b.pp.unwrap().partial_cmp(&a.pp.unwrap()).unwrap());
-
-            if scores.is_empty() {
-                msg.reply(&ctx, "No scores found").await?;
-                return Ok(());
-            }
-
-            if let Some(user_id) = user_id {
-                // Save to database
-                data.get::<OsuUserBests>()
-                    .unwrap()
-                    .save(user_id, m, scores.clone())
-                    .await
-                    .pls_ok();
-            }
-
-            display::scores::display_scores(style, scores, m, ctx, msg.clone(), msg.channel_id)
-                .await?;
-        }
-    }
+    let mods = args.find::<Mods>().ok();
+    let style = args.single::<ScoreListStyle>().ok();
+    let username_arg = args.single::<UsernameArg>().ok();
+    let (osu_id, member) = match username_arg {
+        Some(UsernameArg::Tagged(user_id)) => (None, Some(user_id)),
+        Some(UsernameArg::Raw(s)) => (Some(s), None),
+        None => (None, None),
+    };
 
+    check_impl(
+        env,
+        ctx,
+        msg.clone(),
+        msg.channel_id,
+        &msg.author,
+        Some(msg),
+        osu_id,
+        member,
+        mods,
+        style,
+    )
+    .await?;
     Ok(())
 }
 
@@ -685,49 +646,48 @@ pub async fn check_impl(
     sender: &serenity::all::User,
     msg: Option<&Message>,
     osu_id: Option<String>,
-    member: Option<Member>,
+    member: Option<id::UserId>,
     mods: Option<Mods>,
     style: Option<ScoreListStyle>,
 ) -> CommandResult {
     let bm = load_beatmap(&env, msg, channel_id).await;
 
-    match bm {
+    let BeatmapWithMode(b, m) = match bm {
+        Some((bm, _)) => bm,
         None => {
             reply
                 .reply(&ctx, "No beatmap queried on this channel.")
                 .await?;
+            return Ok(());
         }
-        Some((bm, mods_def)) => {
-            let mods = mods.unwrap_or_default();
-            let b = &bm.0;
-            let m = bm.1;
-            let style = style.unwrap_or_default();
-            let username_arg = member
-                .map(|m| UsernameArg::Tagged(m.user.id))
-                .or(osu_id.map(|id| UsernameArg::Raw(id)));
-            let user = to_user_id_query(username_arg, env, sender).await?;
+    };
 
-            let user = env
-                .client
-                .user(user, |f| f)
-                .await?
-                .ok_or_else(|| Error::msg("User not found"))?;
-            let mut scores = env
-                .client
-                .scores(b.beatmap_id, |f| f.user(UserID::ID(user.id)).mode(m))
-                .await?
-                .into_iter()
-                .filter(|s| s.mods.contains(mods))
-                .collect::<Vec<_>>();
-            scores.sort_by(|a, b| b.pp.unwrap().partial_cmp(&a.pp.unwrap()).unwrap());
+    let mods = mods.unwrap_or_default();
+    let style = style.unwrap_or_default();
+    let username_arg = member
+        .map(|m| UsernameArg::Tagged(m))
+        .or(osu_id.map(|id| UsernameArg::Raw(id)));
+    let user = to_user_id_query(username_arg, env, sender).await?;
 
-            if scores.is_empty() {
-                reply.reply(&ctx, "No scores found").await?;
-                return Ok(());
-            }
-            display::scores::display_scores(style, scores, m, ctx, reply, channel_id).await?;
-        }
+    let user = env
+        .client
+        .user(user, |f| f)
+        .await?
+        .ok_or_else(|| Error::msg("User not found"))?;
+    let mut scores = env
+        .client
+        .scores(b.beatmap_id, |f| f.user(UserID::ID(user.id)).mode(m))
+        .await?
+        .into_iter()
+        .filter(|s| s.mods.contains(mods))
+        .collect::<Vec<_>>();
+    scores.sort_by(|a, b| b.pp.unwrap().partial_cmp(&a.pp.unwrap()).unwrap());
+
+    if scores.is_empty() {
+        reply.reply(&ctx, "No scores found").await?;
+        return Ok(());
     }
+    display::scores::display_scores(style, scores, m, ctx, reply, channel_id).await?;
 
     Ok(())
 }
diff --git a/youmubot-prelude/Cargo.toml b/youmubot-prelude/Cargo.toml
index 2bbc8f0..f229ca0 100644
--- a/youmubot-prelude/Cargo.toml
+++ b/youmubot-prelude/Cargo.toml
@@ -17,6 +17,7 @@ reqwest = { version = "0.11.10", features = ["json"] }
 chrono = "0.4.19"
 flume = "0.10.13"
 dashmap = "5.3.4"
+thiserror = "1"
 poise = "0.6"
 
 [dependencies.serenity]
diff --git a/youmubot-prelude/src/args.rs b/youmubot-prelude/src/args.rs
index f4a02e0..f9aa5c7 100644
--- a/youmubot-prelude/src/args.rs
+++ b/youmubot-prelude/src/args.rs
@@ -1,4 +1,5 @@
 pub use duration::Duration;
+pub use ids::*;
 pub use username_arg::UsernameArg;
 
 mod duration {
@@ -181,6 +182,73 @@ mod duration {
     }
 }
 
+mod ids {
+    use serenity::{model::id, utils};
+    use std::str::FromStr;
+
+    use super::ParseError;
+
+    /// An `UserId` parsed the old way.
+    #[derive(Debug, Clone, Copy, PartialEq, Eq)]
+    pub struct UserId(pub id::UserId);
+
+    impl FromStr for UserId {
+        type Err = ParseError;
+
+        fn from_str(s: &str) -> Result<Self, Self::Err> {
+            utils::parse_user_mention(s)
+                .map(UserId)
+                .ok_or(ParseError::InvalidId)
+        }
+    }
+
+    impl AsRef<id::UserId> for UserId {
+        fn as_ref(&self) -> &id::UserId {
+            &self.0
+        }
+    }
+
+    /// An `ChannelId` parsed the old way.
+    #[derive(Debug, Clone, Copy, PartialEq, Eq)]
+    pub struct ChannelId(pub id::ChannelId);
+
+    impl FromStr for ChannelId {
+        type Err = ParseError;
+
+        fn from_str(s: &str) -> Result<Self, Self::Err> {
+            utils::parse_channel_mention(s)
+                .map(ChannelId)
+                .ok_or(ParseError::InvalidId)
+        }
+    }
+
+    impl AsRef<id::ChannelId> for ChannelId {
+        fn as_ref(&self) -> &id::ChannelId {
+            &self.0
+        }
+    }
+
+    /// An `RoleId` parsed the old way.
+    #[derive(Debug, Clone, Copy, PartialEq, Eq)]
+    pub struct RoleId(pub id::RoleId);
+
+    impl FromStr for RoleId {
+        type Err = ParseError;
+
+        fn from_str(s: &str) -> Result<Self, Self::Err> {
+            utils::parse_role_mention(s)
+                .map(RoleId)
+                .ok_or(ParseError::InvalidId)
+        }
+    }
+
+    impl AsRef<id::RoleId> for RoleId {
+        fn as_ref(&self) -> &id::RoleId {
+            &self.0
+        }
+    }
+}
+
 mod username_arg {
     use serenity::model::id::UserId;
     use std::str::FromStr;
@@ -193,8 +261,8 @@ mod username_arg {
     impl FromStr for UsernameArg {
         type Err = String;
         fn from_str(s: &str) -> Result<Self, Self::Err> {
-            match s.parse::<UserId>() {
-                Ok(v) => Ok(UsernameArg::Tagged(v)),
+            match s.parse::<super::UserId>() {
+                Ok(v) => Ok(UsernameArg::Tagged(v.0)),
                 Err(_) if !s.is_empty() => Ok(UsernameArg::Raw(s.to_owned())),
                 Err(_) => Err("username arg cannot be empty".to_owned()),
             }
@@ -208,3 +276,9 @@ mod username_arg {
         }
     }
 }
+
+#[derive(Debug, thiserror::Error)]
+pub enum ParseError {
+    #[error("invalid id format")]
+    InvalidId,
+}
diff --git a/youmubot-prelude/src/lib.rs b/youmubot-prelude/src/lib.rs
index e4950a7..9af9c3e 100644
--- a/youmubot-prelude/src/lib.rs
+++ b/youmubot-prelude/src/lib.rs
@@ -15,7 +15,7 @@ pub mod replyable;
 pub mod setup;
 
 pub use announcer::{Announcer, AnnouncerHandler};
-pub use args::{Duration, UsernameArg};
+pub use args::{ChannelId, Duration, RoleId, UserId, UsernameArg};
 pub use flags::Flags;
 pub use hook::Hook;
 pub use member_cache::MemberCache;