Syxdes is the youngest sibling of himself, Sevyndes , Aides , and Nyndes . A prankster by nature, but a heart of light deep inside. His Guardian Bakugan is Haos Krakix.
Syxdes and his siblings encounter the Brawlers after searching for their brother Immortus. Upon finding out he is "dead", they remain for his funeral. Syxdes also watches the battle between Masterz and Sevyndes.
After discovering Aides was still alive, he heads off to Neathia with the Brawlers.