"Rescueroid" + "Ambulanceroid"
This monster cannot be Special Summoned except by Fusion Summon. Once per turn, when a monster on your side of the field is destroyed by battle and sent to the Graveyard, you can Special Summon that monster in Defense Position.
5 Machine-Type "roid" monsters
This card can make a second attack during each Battle Phase. This card cannot attack your opponent directly. After damage calculation, if this card attacked an opponent's monster: Negate the effects of that monster (including in the Graveyard). If this card destroys an opponent's monster by battle: Inflict 1000 damage to your opponent.
"Elemental HERO Wildheart" + "Elemental HERO Necroshade"
Must be Fusion Summoned and cannot be Special Summoned by other ways. When this card is Special Summoned: Target 1 monster your opponent controls; destroy that target, then Special Summon 1 monster from your opponent's Graveyard to their side of the field.
2 Machine-Type monsters with the same name
This card can attack your opponent directly.
"Gyroid" + "Steamroid"
1 "roid" Fusion Monster + 1 "roid" monster
You can target 1 face-up monster your opponent controls; Special Summon 1 "roid" monster from your Deck or Extra Deck with ATK less than or equal to that monster. You can only use this effect of "Super Vehicroid - Mobile Base" once per turn. Once per turn, during the End Phase: You can target 1 "roid" monster in your Main Monster Zone (other than this card); return that monster you control to the hand, and if you do, move this card you control to that monster's Monster Zone.
"Truckroid" + "Expressroid" + "Drillroid" + "Stealthroid"
Once per turn: You can target 1 face-up non-Machine monster on the field; equip that target to this card. While equipped with a monster by this effect, this card can attack all monsters your opponent controls, once each. If this card attacks, its original ATK is halved. If this card attacks a Defense Position monster, inflict piercing battle damage.
"Steamroid" + "Drillroid" + "Submarineroid"
A Fusion Summon of this card can only be conducted with the above Fusion Material Monsters. During battle between this attacking card and a Defense Position monster whose DEF is lower than the ATK of this card, inflict the difference as Battle Damage to your opponent.
"UFOroid" + 1 Warrior-Type monster
A Fusion Summon of this card can only be conducted with the above Fusion Material Monsters. The original ATK and DEF of this card become equal to the combined original ATK of the 2 Fusion Material Monsters you used for the Fusion Summon of this card.