any change to the flower effect would make the flower item's effect also be changed...
i can see toxic as a burst of toxic air coming out of his mouth, similar to PM squirtle's bubble gun, but deal very low damage and knockback with the flower effect
try using a vertex weld modifier below the skin modifier, and set the threshold to 0,01. that should fix the blockyness i assume, unless it's a normals problem or a "smooth" problem...
so, if adding the vertex weld modifier doesn't help, add a "smooth" modifier between vertex weld and skin.
sure, i'd like to see what you've done on it so far, i was also thinking about making new boots, idk how necessary it is, but they feel unpolished imo...
so yeah, public anouncement here, it's been a long time since i "discontinued" my work on robin... and i actually feel bad about this, mainly because it wasn't only my project...
so yeah, right now im working on a few fixes our collab needed, namely, giving the inner part of the coat a separate texture, and fixing some minor mapping issues.