Abomination seems super weak, tips?

Wondering what path is best and what characters he synergizes best with. Every time I run him he just feels very weak. Moribund feels like the easiest to control but very lacking in pretty much everything, damage, utility, control. Fiend feels ok damage wise but needs too much attention from stress healers and kinda risky. Haven't messed at all with the other role that gives him mobility, is it any good?

Just wondering if he's undertuned or if I'm just using him wrong.