Agent K is an agent who works for the O.W.C.A..
When Pinky took the elevator to his lair, at first it got clogged with agents, including the kangaroo. ("Isabella and the Temple of Sap") The usually straight face kangaroo later enjoyed the O.W.C.A. Christmas party. ("Phineas and Ferb Christmas Vacation!")
- The kangaroo is a female as it has a pouch.
- Her nemesis is an African-American with curly black hair who slightly resembles Sergei.
- Her secret file states that she uses her pouch to hide secret gadgets and weapons and often carries her joey in it when not on missions. She also loves holiday parties. ("Where's My Perry?")