The characters could have special tattoos that grant them powers or abilities related to their tattoo design.
One of the characters could have the ability to phase through objects, but only for a limited amount of time and with great concentration.
The main character could have a talking animal companion, like a wise-cracking cat or a sassy bird.
There could be a character who is a skilled hacker, able to break into any system or code.
One of the enemies could be a massive, sentient plant creature that can control the minds of living beings.
The main villain could be a shadowy figure, pulling the strings from behind the scenes.
There could be a character who is an expert martial artist, able to defeat opponents with ease, even without powers or special abilities.
An important artifact or object could be integral to the plot, with various characters seeking to obtain or control it.
There could be a character who is a master of illusions, able to trick others with their powers of deception.
One of the allies could be a healer, using magic or special abilities to heal wounds and cure ailments.