Iron Crab

Iron Crab (아이언 크랩, Aieon Keulaeb) is a Level 72 Patrol and one of many series of Workshop Patrols. The size of Iron Crab is pretty big, as big as the size of a fighter plane. According to Traveller, you need someone as powerful as Jyu Viole Grace or Zahard's Princesses just to defeat Level 30 Patrols, and yet the Blue Titan is a Level 72.

Summoning
After Viole obtained the first Thorn fragment, he escaped from inside the Mountain of the Central Island where Reflejo held him captive and destroyed the Blue Titan which was fighting Kang Horyang and Novick. Hwa Ryun then appear from another door and revealed her fake identity as Yuto. She then explained that she will guide them to escape. During their run, they encountered mad dog Varagarv and his partner Ron Mei who were guarding the route. Varagrav sent his Shadow Wolves to attack. Horyang and Novick fought the Shadow Wolves to protect Viole and Hwaryun from behind. Along the way, three Workshop Patrol Iron Crab then appeared to block the path where Viole and Hwaryun were heading to. Baam easily destroy all the Iron Crabs with just one shot of several Baangs after the Thorn reacted to Baam's Shinsu.

Abilities
Iron Crab can be quite overwhelming for any normal Regulars because of their big size. It also looks pretty solid and seems like a normal Shinsu attack won't do much damage to them.