Complex sentence: He is also thought to be a bit vacuous, because of many questionable actions; some of these actions that he is known for are getting his head stuck in the banister and jumping on the trampoline wearing only underwear and a box on his head.
Split into simpler sentences: He is also thought to be a bit vacuous, because of many questionable actions. Some questionable actions he is known for are getting his head stuck in the banister and jumping on the trampoline wearing only underwear and a box on his head.