Self-Destruct

Exploder, also known as Self-Destruct, Kamikaze, and Blowup, is a Blue Magic spell.

Final Fantasy IV
Bomb type enemies, Red Giants, and Balnab use Exploder when low on health or in response to magic.

Rydia can also learn the Bomb summon, which does damage to an enemy based on her HP.

Final Fantasy V
Exploder appears as a Blue Magic.

Final Fantasy VI
Strago can learn Exploder.

Final Fantasy VIII
The Kamikaze command can be junctioned to a party member. It is initially learned by the Cactuar GF, but can be taught to any GF by using the Bomb Spirit item.

Final Fantasy X
Kimahri can learn Self-Destruct as a Ronso Rage Overdrive.

Final Fantasy X-2
Dark Knights can use Charon, which functions in a similar fashion.

Final Fantasy XI
Self-Destruct is a Blue Magic. When revived, the caster suffers from Weakness.

Ninjas can use Mijin Gakure.

Final Fantasy XII
Self-Destruct is an enemy ability used by Bomb type enemies; and Kamikaze is used by Vulture type enemies.

Final Fantasy Tactics
Bombs and Grenades can Self-Destruct, which also adds Oil status.

Final Fantasy Tactics Advance
Blue Mages learn Blowup.