|“||This is such a powerful bomb. I have to call headquarters... It hurts.||„|
|~ Final words before death.|
He was voiced by the late Hiroshi Masuoka, who also voiced a Sun Halo Mask, an Iron Claw Mask, a Large Hatchet Mask, a Shellfish Mask, a Clock Mask, a Can Opener Mask, a Piano Mask and Haniwa Ventriloquist.
A master assassin and master of voice mimicry able to retrieve any phone-based intel including faxes. Telephone Mask is sent after scientists who support the Gorangers with the aid of Zolders as his inside men. After killing off Wakayama, Denwa Kamen nearly poisons Shimizu when MidoRanger intervenes. The Gorangers soon uncover his method and track the Masked Mutant down as he attempts to take out the chief officers of EAGLE.
They manage to locate the Masked Mutant's base at the Eastern Recording Institute thanks to agent 0079. The Gorangers finish Telephone Mask off with the Goranger Hurricane which it transformed into a plan for the bomb which it ends up faxing into himself blowing him up from the inside.
- Telephone Mask inspired other telephone-themed monsters in Sentai history:
- Denwalar in Denshi Sentai Denziman in 1980. (episode 9; fourth series of the Shōwa era)
- Teacher Telephone in Gosei Sentai Dairanger in 1993. (episodes 15, 24, 28, 40, 48; fifth series of the Heisei era)
- DD Donmo in Gekisou Sentai Carranger in 1996. (episode 26; eighth series of the Heisei era)
- Cell Phone Org in Hyakujuu Sentai Gaoranger in 2001. (episode 9; thirteenth series of the Heisei era)
- Trinoid 12: Yatsudenwani in Bakuryuu Sentai Abaranger in 2003. (episodes 18, 21-24, 28-29, 33, 35-36, 40, 42-50; fifteenth series of the Heisei era)
- Yokai Yamabiko in Shuriken Sentai Ninninger in 2015. (episode 14; twenty-seventh series of the Heisei era)