Marduk

Marduk was a Goa'uld. He lead an attack on the temple on Jebbana, taking Kendra as a host for another Goa'uld. Marduk was also a cruel tyrant, and eventually, his own priests rebelled against him. He was locked in his sarcophagus with a creature that ate him alive, only to be healed by the sarcophagus to start it all again. He escaped into the creature, and later escaped the sarcophagus when a Russian Stargate team awoke him. He cacooned himself in the creature, but later took Major Vallentin as a host. Marduk was finally killed when SG-1 detonated C-4, destroying the ziggurat and killing Marduk.