Assado

Assado is the one with the lion-headed cape and member of the Super Five Field Guardians. He was the 1st opponent Yamato faced. His B-Daman is Accel Leon. He appeared later on and apologized for helping Cain in his evil plan. He also joined forces with Yamato to defeat the Neo Shadow Alliance, controlled Robot B-DaPlayer Manuel who had taken over the school where Assado studied.

(Source: wikipedia)