From Dragon Ball Wiki, the ''Dragon Ball'' encyclopedia
Goku communicates with the rest of the Z fighters from Other World by touching King Kai's back.
is a way to communicate with others using one's mind. Several of the Z fighters have demonstrated this ability as well as many other characters throughout the series.
King Kai is possibly one of the most famous users of this technique, as he is able to speak with people all across the universe and can even speak to several people at one time. It can be assumed that he taught it to
Goku while he trained with him in
Other World, who in turn taught the other Z-fighters to use it.
- Goku - Uses it to command Great Ape Gohan to attack Vegeta and to stop Krillin from killing Vegeta.
- King Kai - Uses it to talk to Goku and his friends, to warn them about trouble. People can also touch his back and communicate with any desired people.
- King Piccolo - Uses it contact Tambourine.
- Piccolo - Talks to Gohan several times. Most famously when he was attacked by Android 20, and when he was about to sacrifice himself to save the Earth in GT.
- Master Roshi - Has also used the technique, rivaling Master Shen.
- Master Shen - Talks to Tien and Chiaotzu.
- Tien Shinhan - Used to talk to Master Shen and Chiaotzu.
- Chiaotzu - Used to talk to Tien and Master Shen.
- Vegeta - Uses it to communicate orders to Nappa while visiting Arlia.
- Nappa - Uses it to communicate, agreeing to Vegeta's orders while visiting Arlia.
- Babidi - Uses Telepathy to communicate with the Earth's populace regarding the location of Goten, Trunks and Piccolo.
- Bon Para, Don Para and Son Para - The three brothers use Telepathy to communicate Lord Luud's weakness to Goku, and coordinate a synchronized assault against the machine mutants.
- Dr. Gero and Dr. Myuu - They brainwash Android 17 telepathically.
