The Bride (real name unknown, even the credits list her as "Bride") is an alien character appearing in the Season 2 episode "The Grand Surrender".
She is only seen at the very end of the episode, but is mentioned repeatedly by her fiancee as he tries to get to the wedding in time. He describes her as the woman he loves most in the universe, but fears he is not good enough for her.
Thanks to the Team Squad and their ship, the groom made it to the wedding in time, but Fox accidentally pushed him out of the ship while it was still up in the air. The groom thus fell to the ground and died on impact, his remains getting splattered all over the waiting Bride.