Butt-Ugly Martians

Butt-Ugly Martians was a short-lived CGI cartoon produced by the UK's Just Entertainment (in association with the US-based Mike Young Productions) for CITV. It focused on three butt-ugly Martians named B-Bop a Luna, 2T Fru-T and Do Wah Diddy who were reluctantly sent as scouts to the planet Earth under the commander of their ruler, the Emperor Bog, to make it suitable for conquest. However, they take a liking to Earth and its culture and instead pretend they enslaved it by sending fake progress reports to their boss. Bog starts to get suspicious of the reports, sending in forces to check out on how the trip is progressing, forcing the aliens to defend themselves and their newfound home when the time comes.

Example of:
Teenage Mutant Samurai Wombats