Babidi's Forces are the henchmen used by Babidi. Babidi has just one way of getting his minions to work for him, and that is to put them under a spell to take control of them. This increases all of Babidi's servants' power from what it was and puts the Demon mark on their bodies.
Upon receiving the energy, Babidi betrays and murders Yamu and Spopovich with help from another more powerful minion, Pui Pui. Babidi also has control over the king of the Demon Realm of Darkness, Dabura, whose spit is enough to overpower Krillin and Piccolo, and who killed Kibito. At his base of operations, Babidi unleashes Pui Pui and yet another more powerful minion, Yakon, on Goku, Gohan, Vegeta, and Supreme Kai.
Pui Pui is slaughtered by Vegeta, and Yakon is slain by Goku, but
it is during these battles that Dabura learns Vegeta is vulnerable to Babidi's spell
due to the evil still remaining in his heart, and after reporting this
to the wizard, Babidi casts his magic on Vegeta, turning him into
another of the his soldiers. Later when Majin Buu is hatched from the Sealed Ball, Babidi takes some degree of control over the creature, mostly through bribery.
Vegeta under Babidi's spell.
Vegeta however, does battle with Buu, and sacrifices himself in a vain attempt to kill the monster. Babidi and Buu begin a reign of terror over Earth,
killing millions until being confronted by Goku. Majin Buu battles Goku
but decided to leave, but not before mentioning to Majin Buu that it is
pathetic how Babidi controls him, thus Majin Buu kills Babidi, leading
to later events of the saga. After his resurfacing, Buu defects to the Z Fighters'
side. With Babidi and his subordinates either dead or free from his
possession, the wizard's influence crumbles and becomes a thing of the
past.
Although Majin Buu inadvertently creates his pure evil, evil, and pure counterparts, they have no association with Babidi.