Marron: Daughter of Android #18 and Krillen. A normal human girl, as far as we can tell.

Appearances: Episodes 31, 35, and 43-44.

Sugeroku: At first, some being in another dimension that "forces" Goku into a game (game board with spaces and movement by dice) so Goku can leave. Later, turns out to be a shapeshifting space raccoon that has a son who played the part of the dice. They were trapped in that dimension too, and had to win millions of times in a row to escape, so they decided to cheat. Goku found out, but the dimension is not too keen on cheating, and it started to collapse. Goku broke them out, Kaioubit teleported them to the Kaioushen Homeworld, but after Bebi, we never see what happened to them after.

Appearances: Episodes 30-35

Kudagari: The son of Sugeroku, another shapeshifting space raccoon. He was the dice in the Sugeroku Game, and was the pincers in the efforts to pull Goku's tail out.

Appearances: Episodes 30-35

Kaioubit (a.k.a. Kaioushen, Kibito): The Potarra Earring fusion between Dai Kaioushen and Kibit. He was never really named after that. They usually refer to him as "Kaioushen" or Rou Kaioushen once called him "Kibito". In GT, he rescues Goku from Bebi, and eventually took him to the Kaioushen Homeworld which led to the restoration of Goku's tail. He's the one that finds the Choushensui (Super Holy Water) which can break the spell of Bebi's. Then, he helps Goku and others by teleporting people off of the Earth before it explodes. After that, just becomes a bystander, watching on the Kaioushen Homeworld.

Appearances: Episodes 31-40, 48, and 60-64.

Rou Kaioushen (a.k.a. Dai Kaioushen): The old Kaioushen that was released from the Z Sword of the Kaioushens. Actually, he's a Potarra Earrings fusion from a Kaioushen and a witch, so he has some magical powers. Like the powers to bring forth hidden powers, and has the crystal ball which can be used to view just about about anything. In GT, he is sometimes called "Dai Kaioushen" (Elder), and he's the one that gets Goku to grow his tail back out to release Goku's hidden powers. After that, he's basically on the sidelines watching everything.

Appearances: Episodes 31-40, 48, and 60-64.

Goku Jr: The grandson of Pan. Starts out rather pathetically inept in the martial arts, but eventually events unleash the powers of a Super Saiya-jin within him. In the last episode, he appears in a Tenkaichi Budoukai facing a decendent of Vegeta.

Appearances: DBGT TV Special, and Episode 64.

Forms: Normal, and Super Saiya-jin.

Fights

Demons of Mt. Paozu DBGT TV Special; I've grouped them together, cause I'm not sure of their names, and it wasn't much of a fight. Whenever Goku got into trouble, he had a quick release of power that sent them flying.

Yao Maou: DBGT TV Special; Now with him it was a little more of a fight. After Goku Jr. went SSJ, he finally confronted Yao, and whipped him easily. But when Goku went back to normal, he forgot everything.

Vegeta Jr: Episode 64; fought him in the finals of the Tenkaichi Budoukai. Was pretty even for the part of the fight they showed.

Pakku (a.k.a. Pack): At first, he bullied Goku Jr. But then, he joined on Goku Jr's quest for some reason and the journey made them friends.

Appearances: DBGT TV Special, and Episode 64.

Demons of Mt. Paozu: I've grouped them altogether because I don't really know their names, except for Yao Maou. I'm guessing at their names now based on what the kanji is for their names. No, I'm not reading it, but just comparing the characters to the kanji of names I do know, then guess a name from there. They all only appeared in the DBGT TV Special. From left to right:

Rakal: The rooster demon of the gang. Able to fly. Not much after that.

Keatoey: The lizard demon of the gang. Goku Jr. first sees him chasing a cub bear ready to eat him. Goku Jr. ran away at first, but came back. He tried to swallow Goku, but a burst of power sent him flying off into the distance.

Mamba: The female demon of the gang. Her powers involve her hair, making them grow, come alive, etc. Pakku manages to cut most of it off.

Yao Maou (Demon King Yao): King of the Demons of Mt. Paozu. Much bigger than the rest, that pic doesn't show scale. He has powers to turn his arms into stuff... Like a cannon, blades, etc. Defeated by an enraged Super Saiya-jin Goku Jr.

Dr. Gero: The evil doctor from the Red Ribbon Army bent on destroying Goku for revenge. In GT, he teams up with Dr. Myuu in Hell, to escape and build his ultimate android, Super 17. He is killed by Super 17 when Dr. Myuu reveals that he programmed him to obey only him.

Appearances: Episodes 42-45.

Android #17: An Android built by Dr. Gero from a human boy. Dr. Gero wiped out his human memories, which cause him to hate him ever since. #17 does kill Dr. Gero. In GT, Dr. Gero reveals that #17 was supposed to be his ultimate android, but was incomplete. Dr. Gero forges an alliance with Dr. Myuu hoping to build a machine mutant that would complete #17. #17 is forced into Dr. Gero's control again, he attacks Trunks to give Goku a message to go to Hell. Then, #17 wanted to recruit #18 as his partner again, when she refuses, Krillen is killed. Later he does merge with Hell Fighter #17 to become Super 17.

Appearances: Episodes 42-44.

Attacks: Ki Ball (Not Named), Renzoku Energy Dan, and Kikou