Have you guys watched this animated movie by Dreamworks? It's about Oh (a boov) and Tip's unlikely friendship. Boovs came on Earth to conquer it, while relocating humans to another location. Tip was left behind on Earth and so she and Oh cross paths. Together, they find Tip's mother and find a way to make the boovs accept Oh again. It's such a heartwarming movie. I admit, I cried in the last part, lol. It has gotten quite bad reviews on the web though. I don't understand why, since the story is of course, generic but aside from that, I find all its aspects quite good. The graphics were well-made, the characters were relatable and the music was entertaining as well.