If aliens exist, some alien races could possibly have erinaceine and hystricine characteristics, such as porcupine and hedgehogs.
There is no proof that aliens exist, if they do some races may have both erinaceine and hystricine characteristics.
If aliens exist, the alien races may have mammavian characteristics.
If alien races do exist, they could possibly have hermaphrodite characteristics.
Alien races could possibly have elf characteristics if they do exist.
If aliens exist there could be some alien races that have reptavian characteristics.
If aliens exist, some alien races could possibly have simian characteristics, such as monkeys, gorillas, etc.
If aliens exist, some alien races could possibly have equine characteristics.
If aliens exist, some alien races could possibly have ursine characteristics.
If aliens exist, some alien races could possibly have caprine characteristics.
If aliens exist, some alien races could possibly have porcine characteristics.
There is no proof that aliens exist. If they do, it is possible that alien races could have insectile characteristics.
Some alien races could have mineral based characteristics, if they exist.
No evidence has proven that alien races exist, but if they do they may have repto-insectoid characteristics.