If the Future Trunks Saga took place during the Cell Games...

[Steven Bloodriver]

Namely when Perfect Cell had just created the Cell Juniors and was about to order them to attack the Z Fighters, an unconscious Future Trunks in the Time Machine had appeared right behind his past self from the same timeline?

[nickzambuto]

Wh-whaaa...

[Ki Breaker]

I believe this is more suitable for what if thread..
Anyway ft dies as he cannot defend himself when unconscious and all..
If they manage to pass him a senzu,
Well, cell dies instantaneously

[TheUltimateNinja]

Trunks would wake up and wreck Cell. Then Black would show up and waste them.

[simtek34]

Either Trunks wrecks Cells crap all over the place and the series goes as normal and Mr. Satan dies or... Cell absorbs Trunks and blows up the Earth. Then Black will kill Cell Trunks absorbed then that means Boo is dead. Then Beerus comes to Earth looking for the SSG and kills Black.