Mobile Mayhem/PC Panic - Boss Checklist, Wiki

Terraria Boss Tier List by VeryAnnoyngDude on DeviantArt

Calamity boss tier list by TheScoundrel245 on DeviantArt

Terraria Bosses in Order by @gamingcollective - Listium

Bosses in Terraria - Terraria Guide - IGN

tModLoader - Boss Highlights

Top 10 Best Terraria Mods

So, I was playing Calamity, and for some reason, some of the bosses I've already beaten got unchecked from the checklist? The ones I crossed out are the ones that got unchecked

Terraria Boss Checklist #1 - The Grand Thunder Bird (Expert mode)

Two errors occurring on multiplayer server · Issue #839 · tModLoader/tModLoader · GitHub

Slayer of Worlds achievement in Terraria