Rex's Personally is very interesting he is hard on people because he wants them to be and improve themself if he tells people what they should do better he cares about humanity he loves his friends and family he just hard on them so that his friends can be the greatest they are sometime he is not sometime he lashes out Because of his trauma in the void its been getting better he is not as angry as before he is not as broken before mentally wise he just hard because he wants them to be the best they can be improving over flaws he is wise knowing that transformations aren't everything it won't win a battle your skills techqiues will win transformations should only be used if it has to be used he uses The idea of relying on mastering the power you have rather than chasing transformations He trains a lot using only his base form the increased power further increases his transformations he also knows and uses from time to time the kaioken but he only uses it as a last resort same with Demon rage as he's lived in life he has improved his martial arts However Rex can be hesistent to do fusion however he will do it as a last resort a final trump card if you will
Credit to Impishfont713 Other skills i just remembered Chaos Control Chaos spear chaos blast, Kamehameha Final kamehameha final flash dragon fist