Yes. Some alien races have multiple arms. But currently, it is unknown.
No matter how often you ask, the only honest answer is that nobody has found ANY alien races so far, so nobody really knows anything about them for sure.
We have not made contact with aliens. All one can do is speculate.
It could be possible that some alien races could have four arms and six legs.
Yes. Some alien races have multiple legs. But currently, it is unknown.
In my opinion, yes. Some alien races have supernumerary body parts (i.e. multiple heads, arms, legs, fingers and toes, etc.). But currently, it is unknown.
A dead alien/monster
Yes, some fictitious alien races have extra and/or less body parts (I.e. eyes, ears, noses, nostrils, mouths, heads, arms, legs, faces, fingers/toes, hearts, livers, lungs, kidneys, stomachs, forearms, forelegs, horns, wings, tails, etc.).
legs, arms, eye
22 if you count the monkey with 2 legs and 2 arms
No famous ones, anyway.
Many animals have long arms. The primate species have some of the longest arms. They use them often to swing from trees.
It has large eyes, a big head and a small body. It has no hands or feet on it's body, only legs and arms.
2 arms and 2 legs
How about Legs and Arms.