Fission bomb
From Transformers Wiki
Fission bombs are powerful explosives.
Fiction
Marvel The Transformers comics
The comatose Grimlock dreamt that Optimus Prime had been taken out of action with a fission bomb, allowing the Dinobot to personally take on and kill Megatron, though his victory would be short-lived. Victory!
On Cybertron, when Perceptor's Autobot resistance cell learnt of the space bridge project, they launched a mission to destroy it. While Perceptor and the others laid explosives beneath Darkmount, Blaster sneaked onto the space bridge itself and planted a number of fission bombs before discovering that the bridge itself was the altered form of the captured neutral scientist Spanner. After Darkmount was destroyed, Blaster and the other the Autobots were engaged by Straxus's troops and forced off the dematerialising bridge on Earth before the fission bombs could be detonated. The Bridge to Nowhere!
