Features:
the !!! is the exact opposite of ???
basically instead of attacking you it defends you and will kill the other monsters if nearby, normal monsters aren't a threat but ??? does stand a chance
If !!! is extremely low health then if a player is close it has a chance to grant its powers to the player allowing the player to defeat the monster (monster most likely being the ???)
This mob also brings a new type of mob warriors these mobs will protect you
Design:
Instead of tentacles like ??? it has wings
the snout is similar to a yeep head but longer
instead of one mouth it has one eye
It has a star pattern on it similar to ???'s galaxy pattern
Zipper going across its belly and up to the tail end
Blocks:
This mob does have a few blocks with it that are similar to the void blocks
End:
I kept this a little short and open ended so devs can add their own features (also i ran out of ideas)