Rex and the other Somets were banished to the basement milennia for heinous crimes, and eventually became the surviving eight in the basement. They were released by Vezon. Rex and Ikonox were a team in the Tag-Team Tournament and defeated Bitil and Chirox in the first round. In the second round they combined to form Serpentak, who overwhelmed Tahu and Kopaka. At the end of the tournament, he fought Pridak, Ehlek, and Carapar, but retreated to their secret base.