Colonel Contraction is a character from the episode "Phineas and Ferb Save Summer". He is the superior of Major Monogram and (presumably) one of the leaders of O.W.C.A..
The colonel first appears in a screen inside Monogram's car, warning Major Monogram that his job will be terminated if any mishap is to ever occur in the incoming O.W.C.A. Cadet Graduation Party at the Knights of Danville Hall. Monogram assures that things will be okay, and even arranged a security deposit in the place. Contraction later arrives at the ballroom bringing in the cake, but is horrified to see that the ceremony has been ruined and all of the animal agents are entirely worn out (due to a fight against the members of L.O.V.E.M.U.F.F.I.N. because they were sharing the same ballroom without their knowledge until too late). Infuriated by the loss of the security deposit thanks to the fight, the angry Contraction blames Monogram for what has happened, calling it a 'grade-A countrified debacle". He then strips Monogram of his job, and even humiliated him by painfully striping Monogram's mustache off him, resulting a depressed Monogram to leave in shame. Contraction then promotes Monogram's intern Carl Karl as the temporary head of Monogram's unit until a real replacement can be found.
Eventually, the jobless Monogram manages to get the agents to defeat the members of L.O.V.E.M.U.F.F.I.N. in their grand scheme to rule the world, and following the arrest of the maniacal L.O.V.E.M.U.F.F.I.N. leader Aloyse von Roddenstein, Contraction arrives on a helicopter, thanking Monogram for saving the world by giving him his job back. However, Contraction informs that that the Agency going overbudget because of the ballroom fiasco and has no choice but to shut it down. However, Carl suggested that Monogram can just start up a new agency and name it O.W.C.A. again to make it look like it never happened. Monogram agrees, and to keep down costs in leadership, he fires Contraction, who then leaves saying, "Yeah, well, that's to be expected."
- His name consists of a military rank over a linguistic term that begins with the same letter like Major Monogram, Admiral Acronym, Inspector Initials or Director Dipthong.
- Contraction is a caricature of his voice actor, Jay Leno, right down to the big chin.