These tiers are based on difficulty, not # of tries or likability Also based on how hard they were on my 1st playthrough (for the genocide monsters, you know what I mean)
Toby Fox (of course), Temmie Chang, Undertale/Deltarune team, etc. Spriter's resource Sorry about the deltarune bosses having backrounds, didn't want to go through every picture and recolor them.