Talk:Yūgo Kuga/@comment-5780397-20170403184615

I think the Black Trigger he created reflects his old Border Trigger set:

MAIN: Kogetsu (he was Mogami's rival and the other two had not been invented yet), Senkuu (Boost), Shield (Shield), Spider (Chain)

SUB: Grasshopper (Bound), Spider (Chain), Bagworm, Shield (Shield)

Plus, Echo is basically Radar.