Hi! I would think that umbrella’s character catalyst should be rainy days or stormy weather. The catalyst would be inflict power surge/wither when enemy uses a blockbuster. To remove power surge use a special move and it will inflict special lock/fatigue. The only way to remove it is to use a blockbuster. It like a special and blockbuster cycle and I’m sorry if it has confused you. I want to know about your catalyst idea and what the catalyst can do.