MAC Spider resembles a spider with six legs. It has a fully vertical optical sensor to see. It has needles on its leg joints. It can go over enemies and make a cage over them and shock them until defeat. In its abdomen, it carries triplet cannons that blast even through the toughest of shields.
In episode 40, it was used alongside Aluze against Midnight Percival and Minx Elfin, it defeated the two Bakugan through use of the Vexos Trap Field and it took the Darkus Energy from Percival.
In episode 48, it battled against Helios MK2 and Magma Wilda. It lost and was destroyed by Helios MK2. It was standing above Helios MK2 when Helios activated Blackout Cannon, burning a hole in the middle of MAC Spider's thorax, in which then exploded.
Wild Close: Nullifies the opponent's ability.
Mega Terror Impact: Subtracts 300 Gs from each opponent and adds 100 Gs to MAC Spider.
Spider Net (Squeeze Play): Subtracts 300 Gs from the opponent.
Tarantula Needle: Subtracts 300 Gs from each opponent, and adds 400 Gs to MAC Spider.
Spider Cannon: Subtracts 400 Gs from each opponent, and adds 400 Gs to MAC Spider.
Blaster Needle: Subtracts 300 Gs from the opponent.
When MAC Spider uses the ability Mega Terror Impact, its thorax is exposed to under attackers. Blasting through it with a strong attack can cause it to explode and go offline which was done by Helios MK2.