Ben Ten
From Create Your Own Story
You're a green goop covered alien, who just crashed landed on Earth. You have no actual form in your being, just a green blob, but possess the power to manipulate objects with your mind. You can also split yourself into different entities. You can change your size, color, appearance to match that of an earthling. You also hold extreme amounts of strength.
You slither out of the crash site, vitals are ok, the spacecraft however is not. You were a messenger of the BLOEUAJGK'IN JAKFLIN empire of BLOGUAKAI'TAS, when you hit an asteroid orbiting some random planet. You were carrying a very special item, however. The Omnitrix. Now it is nowhere to be seen. You see footprints leaving the crash scene however.
Follow these footprints, maybe they are the thief's.