Cestro

Cestro, is the Blue Aquitian Ranger. He is entrusted with the power of the Blue Battle Borg.

Like his Mighty Morphin counterpart, Billy Cranston, Cestro is a technological genius. When Billy successfully managed to restore his own age by means of the Power Coins before they were destroyed, he and Cestro frequently worked together to find a similar cure for the other Rangers - as well as finding a means to keep the Aquitians hydrated with pure water. In this way, Cestro was the Alien Ranger who received most attention in storylines (alongside Delphine, the team leader).

Cestro had a guest appearance in Power Rangers: Zeo, in which he came to Earth again, seeking Billy's help to fight off a menace on Aquitar called the hydro-contaminators. Billy's trip to Aquitar saw the beginning of the story arc in which he was permanently written out of the show. Indeed, the Aquitian that Billy falls in love with on Aquitar, Cestria, is believed by some to be Cestro's sister or similar relative (though others dispute this because of the different races of the actors playing the two characters).

Zords

 * Blue Battle Borg
 * Blue Shogunzord

Arsenal

 * Aquitian Saber
 * Aquitian Laser
 * Blue Battle Borg Coin

Trivia

 * Cestro is the only male Blue Ranger to have a light blue costume, because in Kakuranger his counterpart Saizou has feminine behaviors (and his speech pattern is similar to that of a girl). Most Blue Rangers who are light blue are usually female.
 * Cestro is the first black Blue Ranger, followed by Theodore Johnson, Max Cooper, Ethan James and Kevin.

Also see

 * Saizou