Try to avoid Close Quarter Combat with Mal damba since his weapon and cobra stun is effective at close range.and remember,every good Mal damba always throw out atleast 1 ammo for ready stun reload
Unlike most front liners and supports grover has very good long range pressure. He can use his bonus damage scaling legendary to harass enemy front liners from long range or long range enemies from the objective easily.
Strix can easly destroy ghroks totem by simply one shoting it , and remove healing 4 enemy that now you can easly harrash ghrokh and others characters that needed that heal
Buck may try to stomp on you and scare you with his high health pool and regen. Just remember that Buck has a pitiful damage output, start on him early. If you are at or below 700 health, use an escape to regenerate. A clever Buck is deadly.