Kenny Begins (movie, 2009)

Kenny Starfighter is probably the most hopeless student the Hero academics of the galaxy has ever had. But in his desperate attempt in graduating he accidentally crashes on earth and discovers Pontus, an earthling who accidentally stumbled upon an intergalactic crystal which gave him inhuman strength. Now Kenny must save Pontus from Rutger Oversmart who wants the powers from the crystal for himself and Pontus must save Kennys faith from failing school and ending up as a hairdresser.