H
Credit to @ScoutBro for voicing A and D, @collman2010 for voicing E, @the_amazing_maia for voicing F, @3878qryea87rye79a for voicing H, @Tran_Scratch for voicing C, @Wario100 for his old French C and Spanish H and for the flying, landing, and takeoff sound effects, and @Jereoics for C's evil theme.
