Agent T is a secret agent turtle working for the O.W.C.A. in the Easter Island.
While strolling, she spotted Candace in the Easter Island trying to get her phone from a bird. She informed Carl, who then contacted Agent P who used Heinz Doofenshmirtz's "Pick 'Em Up-inator" to bring Candace back to Danville ("Candace Disconnected"). She made a Brief cameo appearance in Just Our Luck waiting in line at Agent con with other agents.
- Unlike other agents she 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, her fedora is brown in another shot, which could simply mean a color error but in her rest of appearances her fedora is like other agents.
- Because of no gender being stated in her first appearance, a few (or most) viewers thought of her as a "he".
- "Candace Disconnected" (First appearance)
- "Just Our Luck" (Cameo)
- "Phineas and Ferb Save Summer"
- Where's My Summer? (Agent File)
|Organization Without a Cool Acronym|
|Francis Monogram | Wanda Acronym | Colonel Contraction (former)|
| Aardvark | Agent A | Antelope | Baboon | Bear | Beaver | Bulldog | Agent C | Chimpanzee | Crocodile | Dog |
Duck | Agent E | Elephant | Agents F | Fox | Frog | Agent G | Giraffe | Goat | Gorilla | Herman the Hedgehog | Heron
Hippo | Horse | Kangaroo | Kitty | Lemur | Lion | Lizard | Llama | Lyla Lolliberry | Manny the Mongoose | Monkey | Moose | Mouse
Newton the Gnu | Agent O | Owl | Penguin | Agent P (Perry) | Peter the Panda | Pig | Agent Pinky
Planty the Potted Plant | Porcupine | Possum | Rabbit | Agent R | Reindeer | Agents R | Agent S | Shark | Snake | Squirrel
Agent T (tadpole) | Terry the Turtle | Agent T (sea turtle) | Warthog | Agent W (whale) | Agent W (worm) | Agent X
|Carl Karl | Carla|
|Norm | Agent T (turkey) | Dennis the Bunny | Agent Doof|
|Equipment and technology | Standard Welcome Package|