best mutant?

Assassin

the normal green ugly one.

lol but the dread and green speed up can be helpful too...the maiden turning invisible may help a bit...the smoke is useless unless ur in a tight spot and theres black smoke everywhere. The assassin is pretty good

None.
MM sucks.

U Jus Suck

Look who's talking... A leecher with 14 posts.

lookif u going to play in maps where people get up to hide i suggest assins a mpa like mall for exmaple if u are going to play in a map where u will run not try to go up i suggest dread
if u are going to play in a map which need 2 pesons to go in a place i suggest mardid and smoke well its good but not usefeull just u will get it for showing up thats are my opins