In reference to Banzai's mental abilities, he has a very investigating and creating mind. He investigates projects rapidly because he is curious about many things. He gets involved in many projects that seem good at the beginning, but he soon must slow down and look at all the angles. He probably gets too many things going at once. When Banzai slows down, then he becomes more creative than before. Since it takes time to be creative, he must slow down to do it. He then decides what projects he has time to finish. Thus he finishes at a slower pace than when he started the project. He has the best of two kinds of minds. One is the quick investigating mind. The other is the creative mind. His mind thinks quick and rapidly in the investigative mode. He can learn quicker, investigate more, and think faster. Banzai can then switch into his low gear. When he is in the slower mode, he can be creative, remember longer and stack facts in a logical manner. He is more logical this way and can climb mental mountains with a much better grip.Not the pinnacle of science, but I had to share.
Banzai is secretive. He has secrets which he does not wish to share with others. He intentionally conceals things about himself. He has a private side that he intends to keep that way, especially concerning certain events in his past.