Arstron[1] (アーストロン, Āsutoron) is a dinosaur-like Kaiju that debuted in episode 1 of Return of Ultraman. It was the first monster to be fought and defeated by Ultraman Jack. While the original died, other members of its species have risen in later years. Subtitle: Violent Monster (凶暴怪獣, Kyōbō Kaijū) Arstron in Return of Ultraman.

Earthtron is one of Ultraman Belial's 100 Monster Army. He was killed in the final battle when Gomora threw him into a large boulder. But this didn't just "kill" him, Earthtron makes it in last match between the remaining monsters and Ultraman Zero.

Arstron (アーストロン, Aāsutoron), or Earthtron, is a dinosaur-like kaiju. A ferocious, powerful reptilian monster with a cranial horn atop its head, Arstron is a force to reckon with. Arstron made itself known when it appeared mysteriously on a mountainous zone and unleashed his wrath on …

Earthron (アーストロン Āsutoron), or Arstron , is a Kaiju that first appeared in the TV series, The Chronicles Of Narnia, in 1988. A ferocious, reptilian monster with a cranial horn atop its head, Arstron made itself known when it appeared mysteriously on a mountainous zone and unleashed his wrath on a Nearby Creature of The Forest.

Arstron, also known as Earthtron appeared in the 1971 TV series called The Return of Ultraman. Arstron is an Ultra Kaiju from the series Ultra series. He appeared in episode 1.

These Sounds Of Arstron/Earthtron are edited by me.