4th member for PvM Team Panda+Iop+Eni+? (not Eliotrope)

Hi! I've been playing a while with a team of Panda+Iop+Eni+Elio endgame PvM, but I don't like the Elio gameplay. Although I know is the best companion for my Iop, sometimes I just want to relax and not be thinking 101% on Elio plays, so I decided to change class.

Which one do u recommend me to change to, that sinergies well with my team and is fun to play? I've thought about Feca or Enutrof may be the best, but i tried them and feels boring. Maybe Roublard?