Earthtron

Earthtron (アーストロン) is a fictional kaiju from the tokusatsu TV series, The Return Of Ultraman (Kaettekita Urutoraman, 1971).

Subtitle: Violent Monster (凶暴怪獣).

History
Earthron first appeared mysteriously in a mountainous region without warning or origin, attacking a nearby village and setting fire to the homes with its heat ray. MAT arrived shortly after the monster arose, attacking the beast with their cannon fire but to no avail. Earthtron continued destroying the village. Goh Hideki, the host of the newest Ultraman came to the scene, guided by Ultraman Jack's conscience came to the village to help some people who were trapped in the debris caused by Earthtron's rampage, before unknowingly transforming into the new Ultraman Jack by sheer willpower. Jack quickly turned to face Earthtron and the two fought, taking their battle from the ruined village to a nearby valley (persumably the same one Earthtron emerged from). However, Jack's color timer was start to blink cause his strength to depleate and Earthtron to gain an advantage, but Jack continued to fight back and eventually hit Earthtron with a Specium Ray, causing Earthtron to tumble back into a crater and explode into blue flames.

Stats
Its height is around 60 Meters tall. It weighs around 25,000 Tons.

Redman
This Monster reappeared in Redman.

The Ultraman
This Monster re-appeared in the series The Ultraman.

The first monster in the Baladon kaiju army, Earthtron emerged from the ground and quickly engaged Ghostron in battle. As the Science Garrison watched on in awe, yet another beast, Gokinezura, joined the three in a titanic three-way battle royal. As the three creatures were locked in mortal combat, Aboras and Banila battled elsewhere on the island. With five monsters running wild, the Science Garrison began to blanket the entire island with bombs! The violence was only stopped for a short while until Red King, the island’s strongest creature, gave rise. When Jonias was locked in combat with Red King, Earthtron moved in to attack the hero, but a quick blast of his Planium Ray ended its life for good.

Ultraman Mebius
This Monster reappeared in the series Ultraman Mebius.

In this series, Earthtron's origin is again not stated and his attack comes out of the blue like before, attacking GUYS HQ at a test site. However this time his actions are being guided by a Kelbeam, who is using frequency waves (originally intent to control Manquette Monsters) and directing them at Earthtron to control him (In a rather comical way.) Ultraman Mebius arrives to do battle against the two monsters who double-team him, but Team GUYS learns of Kelbeam's control over Earthtron and destroys the waves that are doing so, severing Kelbeam's control. Now free, Earthtron attacks Kelbeam, but is quickly destroyed by Ultraman Mebius, who uses his Medium Blade to cut Earthtron in half.

Ultra Galaxy Mega Monster Battle
This Monster reappeared in the series Ultra Galaxy Mega Monster Battle.

In this series, Earthtron appears again out of no where and attacks a Kelbeam in the area (possibly reminiscing their relationship in the previous series.) It seems Kelbeam has won as it hits Earthtron with several fireballs causing Earthtron to collapse, but Earthtron feins his defeat, ambushing Kelbeam by tearing off his "ears" and killing Kelbeam with his Heat Ray. Shortly after his victory, Earthtron is dragged underwater where he is forced to do battle against an Eleking, where he wasn't so lucky, being electrocuted to death by Eleking's tail.

Earthtron appears again in the flashback of a little girl who witnesses him in battle against a Red King.

Ultra Galaxy Mega Monster Battle: Never Ending Odyssey
This Monster returned in the sequel series Ultra Galaxy Mega Monster Battle: Never Ending Odyssey.

In this series, Earthtron was seen briefly in battle but was killed in battle (along with his master, Alien Zelan) by a Galberos who belonged to an Alien Nackle.

Mega Monster Battle: Ultra Galaxy Legend The Movie
This Monster reappeared in the movie Mega Monster Battle: Ultra Galaxy Legend The Movie.

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.

アーストロン