Colin ?, code name Thunderdrake, is a martial artist with a paralyzing shout. He's a member of the Dragons.
Thunderdrake discovers that Bladedancer has the sword Destiny's Wave, and determines to get it for himself. He attacks Chou, and is barely beaten off.[1]
Eventually, Thunderdrake is told to lay off by the head of the Dragons. Instead, they are to invite Chou to be a member.[2][3]
The Master of Dragons instructs Thunderdrake to invite Chou again, and she drives him off, wanting nothing to do with him.[4]