Dragon Ball - episode 72 - 28 Jul, 1987

Baba summons a coffin. Out comes Yamcha's opponent, a mummified warrior. The mummy is a lot faster and stronger than he looks and Yamcha nearly falls in the Devil's Toilet. The mummy beats Yamcha despite his attempt to retaliate a surprise attack as the gang watched in horror, threatening to crush him by breaking his limbs if he refuse to surrender. Unable to watch her master being tortured in the fight, Puar has finally had enough. She cuts in and transformed into a woodpecker to peck the mummy, forcing him to release Yamcha, but it makes matters worse; the mummy knocked down Puar to the ground with Yamcha and she was seemingly dead (she was only knocked out and not dead). Furiously pained by the loss of his shape shifting friend, Yamcha tries his last effort to defeat the mummy, but was too weaken from the beating. The mummy then grabs Yamcha and forces him to give up or fall into the Devil's Toilet. When Yamcha refuses, he drops him into the green lava of the Devil's Toilet. Goku saves Yamcha with his Power Pole thus Baba decides he's already lost, and while Yamcha and Puar recovered to watch with the others, he enters the next fight.  (Source: Wikipedia)