Midgar Zolom

The Midgar Zolom is kind a giant serpents in Final Fantasy VII that dwell within the marshlands leading to the Mythril Mine. The Midgar Zolom is incredibly powerful at the party's level when they first arrive, so it is necessary to cross the swamp by means of Chocobo, as they are unlikely to outrun the monster by foot. Sephiroth easily killed a Midgar Zolom while making his way through the same swamp on foot.

When the battle begins, Midgar Zolom attacks only by using its physical attack and Bite, its special. However, when it takes enough damage, it begins to levitate and can use Push to remove a character from battle. It also uses the powerful Beta attack at this point, which is lethal at this stage. The Midgar Zolom is very challenging to defeat, and although it is possible, it merely respawns in the swamp and begins chasing the player again.

Etymology
"Midgar Zolom" is an incorrect rendering of "Midgardsormr"