Your opponent cannot target "Gladiator Beast" monsters you control with card effects, except during the Battle Phase.
If a "Gladiator Beast" monster(s) is Special Summoned from your Main Deck (except during the Damage Step): You can Special Summon 1 "Gladiator Beast" monster from your Deck with a different Type from the monsters you control, in Defense Position.
You can only use this effect of "Gladiator Rejection" once per turn.