Complex sentence: Due to the fact that his entire family was killed by superhumans he harbors a distrust of the superpowered individuals of the team, still he is nonetheless good friends with Jukko--the pair often engaging in witty banter on and off mission.
Split into simpler sentences: Due to the fact that his entire family was killed by superhumans he harbors a distrust of the superpowered individuals on the team. Nevertheless, he is still good friends with Jukko--the pair often engaging in witty banter on and off mission.