Evrae Altana (Final Fantasy X)

Evrae Altana is a boss in Final Fantasy X.

After Evrae is beaten, and Tidus, Wakka and Rikku are imprisoned in the underwater part of the Via Purifico, Evrae Altana, a Zombie version of Evrae, appears. The party can choose to fight it (and have to swim through the channel and fight lots of difficult monsters), or use Trigger Commands to break the locks on nearby underwater gates to escape from it (and miss a bunch of useful items). Since it has Zombie status, it is vulnerable to curative items, so a few Phoenix Downs will kill it quickly.