I decide to copy Inzektors.

[Toffee.]

Since part of this was inspired by Transformers.

Yellow-Gear Shovel Claw
LIGHT / Level 4
[Machine/Effect]
Once per turn you can Equip 1 other "Yellow-Gear" monster you control, or 1 from your Hand to This card. While this card is equipped with a "Yellow-Gear" monster, it's original ATK becomes 2000. If this card is equipped to a "Yellow-Gear" monster, that monster is also treated as a "Shovel Claw" monster, and if it destroys an Opponent's monster as a result of battle, Banish that monster.
ATK / 800 DEF / 1500

Yellow-Gear Earth Drill
LIGHT / Level 4
[Machine/Effect]
Once per turn you can Equip 1 other "Yellow-Gear" monster you control, or 1 from your Hand to This card. While this card is equipped with a "Yellow-Gear" monster, it's original ATK becomes 2000. If this card is equipped to a "Yellow-Gear" monster, that monster is also treated as an "Earth Drill" monster, and it inflicts piercing damage.
ATK / 1200 DEF / 700

Yellow-Gear Wide Load
LIGHT / Level 4
[Machine/Effect]
Once per turn you can Equip 1 other "Yellow-Gear" monster you control, or 1 from your Hand to This card. While this card is equipped with a "Yellow-Gear" monster, it's original ATK becomes 2000. If this card is equipped to a "Yellow-Gear" monster, that monster is also treated as a "Wide Load" monster, and if it destroys an Opponent's monster as a result of battle: Add to your hand 1 "Yellow-Gear" monster from your Deck, with the same name as the monster this card is equipped to.
ATK / 500 DEF / 2000

Yellow-Gear Construction Site
Spell / Field
Destroy this card if you don't control a face-up "Yellow-Gear" monster. Neither player can Summon monster(s) from his/her Extra Deck. Once per turn, if a monster equipped with a "Yellow-Gear" monster would be destroyed(either by battle or card effect), it is not. All face-up "Yellow-Gear" monsters you control gain 200 ATK and DEF.

Gearloose Power Shovel
Spell / Equip
Equip only to a "Yellow-Gear Shovel Claw" monster. Equipped monster gains 500 ATK. If the equipped monster is also equipped with a "Yellow-Gear Shovel Claw", Increase the ATK of the equipped monster by 300 for each of the Opponent's Banished monsters. While this card is face-up on the field, you cannot Summon from your Extra Deck.

Gearloose Giga Drill
Spell / Equip
Equip only to a "Yellow-Gear Earth Drill" monster. Equipped monster gains 300 ATK. If the equipped monster is also equipped with a "Yellow-Gear Giga Drll", once per turn you can Target 1 Attack Position monster your Opponent controls, and change it to Defense Position. Then, in addition to a normal attack, the equipped monster can declare a second attack against that Target monster. While this card is face-up on the field, you cannot Summon from your Extra Deck.

Gearloose Heavy Load
Spell / Equip
Equip only to a "Yellow-Gear Heavy Load" monster. Equipped monster gains 700 ATK. If the equipped monster is also equipped with a "Yellow-Gear Heavy Load", add to your hand 1 "Gearloose" card, each time the Equipped monster destroys an Opponent's monster as a result of battle. While this card is face-up on the field, you cannot Summon from your Extra Deck.

Gearloose Rocket-Eject
Trap
Send 1 "Gearloose" card equipped to a monster to the Graveyard and Target 1 card on the field: Destroy the Target.

Gearloose Urgent Support
Trap
Target 1 "Yellow-Gear" monster in your Graveyard: Special Summon 1 "Yellow-Gear" monster from your Deck. Then, Equip the Summoned monster with the Target monster. During the turn you activate this effect, monsters other then the Summoned monster can declare an attack. You can only activate this card during your Main Phase 1.

Gearloose Battle-Transformation
Trap
Send 1 "Yellow-Gear" monster from your Hand, Spell/Trap card zone, and Monster card zone to the Graveyard: Draw 4 cards. You can only activate 1 "Gearloose Battle-Transformation" per turn.