Use your imagination to create your own unique characters, this is your story, so don't you think being unique and descriptive would bring about a better RP than a hastily thrown together copy of another character?
By "original," we don't mean your character's design can't be somewhat inspired by other characters from all the different videogames, anime, manga, and cartoons out there. Take my Navi, MachMan, for example:

His design is based off Megaman, but his color scheme is quite different, instead of wearing a helmet, his hair is spiky and metallic (inspired from the Ray-series robos in Custom Robo), has ear pylons (inspired from Megaman Zero-series designs), thrusters mounted on an angled chest plate (inspired from the MS-18E Kampfer mobile suit), and floating wing structures (partially inspired by the Protoss from the StarCraft series, and my own ideas).
Please don't be afraid to ask us questions about anything, come on to The Chat to be able to talk with us one-on-one and get to know other members.