I have a Snowflake, White Eyed, and a Golden. All three are passive, but come feeding time...
The SFE is agressive and has actually broken a back spine of my 8-9" Lionfish clean off.
The White eye is an agressive feeder but has never snappe at a single fish.
My Golden is the biggest baby of them all, he has to have the food brougght to him and will back down when a Maroon clown challenges him to a piece of shrimp.
My 2 cents.....
BTW Green Wolfs have a reputation of being kind of nasty.