Deep Throats are anonymous informants from inside the government who leak information that they believe should not be kept from the public.

In Velocity Girl 1, a Deep Throat risks his career (and probably his life) to inform Velocity Girl that she is a Cyclone Kid, the grandchild of a mother-to-be who participated in Project Cyclone.

Deep Throat appears again as an agent of A.S.P. in Velocity Girl 4.