Suggested by Destroyer King Kong is a tough fighter and he’s even gone up against Godzilla in the past. That said, he has no true long range options and is lacking in speed when put up against Rainbow Dash. He will quickly be overwhelmed by her quick attacks and doesn’t have enough durability to stay in the fight for long. Rainbow Dash will just keep unleashing Sonic Rainbooms until he goes down and there isn’t much he can do to stall for time. Rainbow Dash wins.