Molecular Combustion (self) – The ability to make your body or parts of your body explode.
The Worst X-Men ever has the ability to explode once and die and uses this power to save the world (Worst X-Man Ever #5)!
Grenade’s (Marvel) real name is Hugh Fox and can explode just like me (1993 SkyBox Ultraverse).
Fission Bombs – Secret Empire (GN)
Vector 13 – “Heatwave” – 2000 AD #967
Vladimir (Bomb) – Secret Avengers V3 #3