| AlphaMech STU-Thunder Marine |
|Romaji||Arufamekku Esu Ti Yu - Sandā Marīn|
|Type(s)||[ Machine/Fusion/Effect ]|
|ATK / DEF||2800 / 2600|
Lore"AlphaMech S-Terra Marine" + "AlphaMech T-Ocean Thunder" + "AlphaMech U-Burst Cannon"
Must first be Special Summoned from your Extra Deck by banishing the above cards you control. (You do not use " ".) This card cannot be Special Summoned from the Graveyard. Once per turn, you can discard 1 card to negate one of your opponent's attacks.