Agent T is a secret agent turtle working for the O.W.C.A. in the Easter Island.
While strolling, he spotted Candace in the Easter Island trying to get her phone from a bird. He informed Carl, who then contacted Agent P who used Heinz Doofenshmirtz's "Pick 'Em Up-inator" to bring Candace back to Danville ("Candace Disconnected"). He made a small cameo appearance in Just Our Luck waiting in line at Agent con with other agents. In Phineas and Ferb Save Summer he participates in both agent/scientist brawls but is kicked away by a doctor both times.
- Unlike other agents he has a black fedora. This could mean some kind of age as since in the 80-90's the usual fedora color was black. However, his fedora is brown in another shot, which could simply mean a color error but in his rest of appearances his fedora is like other agents.
- He's good for land and sea work, but his remote Easter island home makes him a poor candidate for last-second missions and after mission get-togethers.
- "Candace Disconnected" (First appearance)
- "Just Our Luck" (Cameo)
- "Phineas and Ferb Save Summer" (Cameo)
- Where's My Summer? (Agent File)
- "O.W.C.A. Files"(with orange color)