(Rated: T due to Limbs getting cut of and some other things) [Summary: When Optimus and Megatron were both in Unicron's spark chamber and Optimus was using the Matrix of Leadership to destroy Unicron's spark but Megatron interrupted the process for a moment and this allowed some of Unicron's energy to implant itself inside Optimus's and Megatron's sparks] find out what happens.