Ryuji Iwasaki (岩崎 リュウジ Iwasaki Ryūji) is Blue Buster (ブルーバスター Burū Basutā) of the Go-Busters. He is a warrior with excellent fighting technique, as well as the oldest of the team. His partner Buddy Roid is Gorisaki Banana. His Buster Power is super strength. However, this has a dangerous trade-off. When Ryuji uses his power too much he will overheat and has to take time to cool down. If he completely overheats, he becomes very violent, and this puts a great toll on his body.