From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Supportive techniques are techniques which appear in the Dragon Ball series and are used in order to assist the user in a fight. There are only a few supportive techniques, however, they are significant and memorable in the series.
One example of a supportive technique would be the Telekinesis technique, used by Chiaotzu and General Blue. It is first seen in Dragon Ball, where General Blue uses it in the fight between Goku, Krillin and himself. He uses it in order to pin Goku down, so that he may openly attack him. However, Goku eventually breaks free from it. It is then seen in the 22nd Tenkaichi Budokai, where Chiaotzu uses it in the match with Krillin, where he directly attacks Krillin's internal organs without touching him. Later in the tournament, during Goku's match against Tien, Chiaotzu is ordered by Master Shen to repeatedly paralyse Goku and hold him in place with his telekinesis. Tien discovers this however, and tells Chiaotzu to stop this. Telekinesis can also be used to move inanimate objects, where Frieza is seen moving the Dragon Balls.
Multi-Form is another supportive technique. Multi-Form is the ability to split the users body into multiple forms. It was first used by Tien in the 23rd Tenkaichi Budokai. After Goku removed his weighted clothes it became apparent that Goku's speed was too much for Tien, to counter it Tien unveiled his new 12 eyes technique. To perform it, Tien powers up and splits into two, then those two split clones into four. Krillin, Piccolo, Cell and Gogeta have all been seen to know and use this technique. Although Krillin and Piccolo could not use it to the extent that Tien Shinhan could, they could create three versions of themselves.