Role Saver

When someone leaves your server, the bot will automatically remember all the roles and the nickname that person had. That way, if they ever decide to join your server again (because your server is just that freaking cool), they automatically get all their roles and nickname back that they had previously!

Setup:

Simply invite the bot to your server, and move the "Role Saver" role to the top. That's it!

Additional Features:

Blacklist/Whitelist - Create a blacklist or whitelist to disallow specific roles from being saved or only allowing specific roles to be saved, respectively
Logging - Have every save and restore event logged into a channel of your choice
Nickname saving - You can enable or disable this by toggling the "Manage Nicknames" permission on the bot

Premium Option:

Need high reliability? Instead of trying to share the limited throughput with thousands of other servers on the public bot, you can use the Premium bot for only $2.99/month! This has much higher reliability than the public bot. More information can be found either with /premium or by going to https://patreon.com/rolesaver