Titanus is a giant Carrier Zord that was occasionally used by the Mighty Morphin Power Rangers. It was modelled after a brachiosaurus and could combine with other Zords to form even stronger machines. The Power Rangers first encountered Titanus when they tried to retrieve some ancient Ranger weapons called the Thunder Slingers, but the massive Carrierzord was defending them from anyone who attempted to take them, be they friend or foe. The rangers outsmarted the robot, however, and took the weapons they needed to defeat Rita Repulsa's new Super Putties.
Zordon informed the rangers later on that Titanus was a friend and that they could call upon him now that they had proven their worth. Since then, when the rangers have come up against an exceptionally powerful enemy, they have called upon Titanus to even the odds.