Alien

Alien is a term used to describe an lifeform that is not native to one's planet/dimension. It can be used independently between any different planetary species' (the Triceratons calling Earth beings aliens, for example), but is primarily used to describe beings not from earth, as that is the main planet of the TMNT multiverse.

Known Alien Races Not Native to Earth

 * Aeons
 * Daagon
 * D'hoonibian
 * Dream Beavers
 * Glaxxons
 * Ice Dragons
 * Insectoid
 * Inuwashi Gunjin
 * Kanabo
 * Kraathatrogons
 * Malacostra
 * Malignoid
 * Neutrinos
 * Polarisoids
 * Protoceratons
 * Rock Soldiers
 * Salamandrians
 * Scatterpillars
 * Scorpinoid
 * Sea Monster
 * Spasmosaur
 * Spiney / Spinek
 * Squibbles
 * Styracodons
 * Triceratons
 * Utroms