Powers and Abilities
Sai of the Torrent wears the Armor of Torrent, which gains power from water. In the water Sai is almost unstoppable. His weapon is a trident which can also capture his foes. His special attack is "SUPER WAVE SMASHER!" which sends forth a massive blast of water.
Sai also appears to have the ability to communicate with aquatic life.
Other than his armor and fighting skills Sai has relatively few other abilities.

Weaknesses
Sai's weaknesses include an lessened ability to fight on land and a relative lack of personality. He is a follower not a leader. His love of marine life may prove to be his ultimate downfall.