At the end of the second zone in each Episode, Flash must face Trickster in his Trickstermobile. While the boss in the "boss stage" remains the same throughout the game, the Trickstermobile increases in difficulty with additional weapons and speed as the game progresses.
The final encounter in each episode's second zone involves Flash facing off against Trickster inside his distinctive mobile vehicle. The boss fight is consistent across the game, but the difficulty of this encounter increases as the game progresses, introducing new weapons and making the Trickstermobile faster.