Tengen is basically that theatre kid who never got any attention at school or when he was younger; he's all about things being flashy and treats everything like it's a stage performance. He also compares most situations to his three wives, even if the circumstance seems to be utterly unfitting which leads many to question exactly what kind of things he gets up to. He also gets insecure when he thinks people are either not impressed by him or that his flashiness has been ignored which has lead to him announcing his presence.

The essence of what I'm going for is Tengen's flashy attitude kind of being ramped up more than it is in canon but also having boisterousness charisma similar to characters like All Might.