Machiners Colonel / Machina Colonel
Earth Machine / Special Summon / Effect
LV10 3000/2500
Cannot be Normal Summoned/Set. Must be Special Summoned by a card effect.
You can only use this card name’s (1) and (2) effects once per turn each.
(1) (Quick Effect): You can target 1 Machine monster you control; destroy that target and all monsters your opponent controls with equal or less ATK
(2) If a face-up EARTH Machine monster you control, except “Machina Colonel”, is destroyed by battle or card effect and this card is in your GY: You can Special Summon this card.

Machiners Airraider / Machina Airraider
Earth Machine / Effect
LV8 1500/2600
You can only use this card name’s (1) and (2) effects once per turn each.
(1) You can discard 1 other “Machina” monster from your hand; Special Summon this card from your hand.
(2) During your opponent’s turn (Quick Effect): You can target 1 Machine monster you control; Special Summon 1 “Machina” monster with a different name and the same or lower Level from your Deck, and if you do, destroy the target.

Machiners Radiator / Machina Radiator
Earth Machine / Effect
LV8 1700/2400
You can only use this card name’s (1) and (2) effects once per turn each.
(1) You can discard 1 other “Machina” monster from your hand; Special Summon this card from your hand.
(2) You can target 1 Machine monster you control; Special Summon 1 “Machina” monster with a different name and an equal or lower Level from your GY, and if you do, destroy the target.

Machina Fortress Reprint

Machina Gearframe Reprint

Source