Chameleon

Chameleon (カメレオン) is a denizen of Daemonium and a Summon Spirit exclusive to Tales of Phantasia. The timeline seems to be doing its best to forget Chameleon's existence, however, being removed from the PlayStation and Full Voice Editions of the game, as well as not appearing in the sequels (Narikiri Dungeon and Summoner's Lineage).

Appearances
Chameleon is a beast of Daemonium, appearing just as his namesake.

Tales of Phantasia
Chameleon is a green reptile found in the Lower Morlia only in the Super Famicom and GameBoy Advance versions of the game. It requires the Emerald Ring to forge a pact, granting Klarth F. Lester with the power to summon him in battle. When summoned, Chameleon uses his tongue to eat an enemy, inflicting instant death. He is best known for his infamous glitch in the original Super Famicom version, where if Chameleon attempts to eat an enemy sprite too large, he'll instead cause the game to lock up in an unending loop of his tongue.

Tales of Destiny
A consumable item called "Chameleon" is dummied out of the game, though a picture of it exists. Given the nature of similar consumable items, as well as the fact that the picture doesn't depict an actual chameleon to be used as food, it can be inferred that it was intended to summon Chameleon.

Mothership Titles
Tales of Phantasia (SFC) - Claus F. Lester Tales of Phantasia (GBA) - Claus F. Lester (Chameleon)

Fan-Translated Names
Tales of Phantasia (SFC) (DeJap Translations): Chameleon Tales of Phantasia (GBA) (Kajitani-Eizan): Chameleon

Tales of Phantasia (SFC)
Translated Description (DeJap Translations): "Summons the Spirit of Death. Chameleon swallows his prey whole."

Tales of Phantasia (GBA)
Localized Description: "A forbidden ancient spell that summons a beast from Daemonium."