Nail:
Nail is the Great Elder's guard, as he is the strongest fighter on Planet Namek. While trying to protect the Elder, Nail was beaten up by Freeza. Later he was found by Piccolo who fused with him to save his life. This makes Piccolo stronger and able to fight Freeza.

Scargo:
Scargo is Dende's brother, who was killed by Freeza's men when their village was invaded.

Muri:
Muri is the elder who received the Great Elder's power after his death.

Lord Slug:
Lord Slug appears in DBZ Movie 4 as an enemy who tries to take over the Earth. He is defeated by Goku's Genki Dama. He is a movie only character.