finally broke in 
whatever you do please please pleaaase keep The Breeder ill get it and use it for like 5 seconds and those are gonna be a really funny five seconds. to me.
but as for actual suggestions uhh i'll just throw some ideas out:
Holder - pick up x amount of mobs (no idea how you'd code this but. still)
Friend - maybe triggered by "Best Friends Forever" advancement (tame a mob)
Malpractitioner - use harmful effect potion on other players/yourself/peaceful mobs
Exile - "Voluntary Exile" advancement.
Normal (or Normal Guy? Normal Girl...) - use milk to remove effects.
KSB Royal Ambassador - tame the beast.
Crunchmaster - tame a parrot
The Killar (sic) - "Monsters Hunted" advancement (kill every type of monster, or more feasible, a certain number of any monster)
Psychoactive - ...not sure on how to get this honestly. I just think its a great title. maybe having all buffs at once?
also the cunty walker is really good