Green Catfish is good support partner,so you focus on his support skills.His first skill is based on HP,so it's obvious it is wise to build him HP focused.His summon shield also depends on his hp.And about patterns it depends completely on your lineup whether you need cat+hippo or cat+whale or full hippo.
So how did it work out for you bud? I heard that Green catfish is pretty popular and kind of an interesting partner.
Hi ragnarok, its still under development reached max 5 star but pattern not upgraded yet. Waiting for soul event lol.
I saw many big player using it its a very Good 4-star partner.