Engine Core

Engine Core is a gimmick that appeared in ''Sonic Heroes. ''It is simply the core of some bull trains and it serves as a self-destruct switch for the transport tunnel that the trains run in.

Description
Engine Core is a big machine attached to the back of some Bull Trains. It has a blue core in the center of the Engine Core and the core itself is attached to numbers of cables that take the energy from the core to feed the Bull Train. When the Engine Core is destroyed then it will create a massive explosion that will destroy the Bull Train and the Transport Tunnel too, but it will not do any damage to the player. The Engine Core can only be destroyed by a Power Formation user. It is only appeared in Bullet Station.