Telesdon

Telesdon is a kaiju and antagonist in the Ultraman franchise, first appearing in the original Ultraman TV series.

Ultraman
Telesdon was released by the Underground People to wreak havoc on the surface to distract the Science Patrol from their real plan, to brainwash Shin Hayata, the host of Ultraman, to be their weapon. However, the Underground People underestimated Ultraman's power. After destroying the Underground People, Ultraman heads to confront Telesdon. The two fight, with Ultraman winning and destroying the kaiju.

Telesdon was later revived by Geronimon, only to be killed again by the Science Patrol.

Ultra Galaxy Mega Monster Battle
A Telesdon was observing fighting a Sadola and Red King by ZAP SPACY.

It later appeared to back up Golza in its attack on the Pendragon. After Rei showed up he sent Gomora to battle it, who destroyed Telesdon with his Oscillatory Ray.

Telesdon was later revived by Bullton to attack ZAP SPACY, only to be killed again by Gomora's Oscillatory Ray.

Ultra Galaxy Mega Monster Battle: Never Ending Odyssey
Telesdon appeared in episode 10, where it was sent out by Alien Zetton to battle Alien Hook's Re-Dorako. Both were destroyed by King Joe Black when it arrived on the scene.

Mega Monster Battle: Ultra Galaxy Legends The Movie
Telesdon appears as a member of the Belial Army. He attacked Gomora alongside Alien Temperor, Muruchi, Super Alien Hipporito and Earthron. He was later destroyed by Ultraman Zero's Zero Wide Shot along with Alien Temperor, Vakishim and Gudon.