Dialga has many commands to use, make sure your moderators have Admin/manage messages permission to access all moderation commands. if you need help use $help or $help (command name) to get information about that command. make sure Dialga have high role position and permission to add/remove roles.
What Dialga does: it able to ban, kick, mute, tempmute, unban, unmute, add/remove role more. also dm you when you were kicked, banned, muted, add/remove role etc.
Dialga all commands:
Mod commands: $ban | $kick | $mute | $unmute | $tempmute | $clear | $unban | $addrole | $removerole | $lock | $unlock | $tempban
Fun commands: $cat | $dog | $meme | $8ball | $calculator | $dadjoke
Special commands: $roar-of-time
Utilities commands: $userinfo | $serverinfo | $avatar | $help | $say | $botinfo | $esay | $emojiconverter