|Debut||Manga: "Cell, Brought to Bay"|
Anime: "A Hero's Farewell"
|Similar techniques||Android Bomb|
Revenge Death Bomber
"Boy, this is the end for you. You thought you could beat me but you can't, hehehe. I'm going to blow myself up now, and I'm gonna take you with me! Say goodbye to your precious planet"
When he uses it, Cell pumps himself up like a balloon and explodes after one minute.
Cell uses Unforgivable! in an attempt to blow up the Earth to defeat Super Saiyan 2 Gohan during the Cell Games. However, Goku prevents him from doing so by taking Cell to King Kai's planet via Instant Transmission, and Cell ends up destroying this planet instead, killing Goku, King Kai, Bubbles and Gregory. A small part of Cell survives the explosion and he regenerates, becoming even stronger than before.