The mech was used by Frakjaw when he and Krazi joined their temporarily-revived former leader, Samukai, in attacking Ed & Edna's Scrap N Junk so that Samukai could eliminate Jay and take his place among the living. It was disabled fairly early in the fight.
- It is possible—though unconfirmed—that the Skulkin Mech was created by Dr. Julien, who was also responsible for building the other Skulkin vehicles.
- Despite being in the Ninjago Museum of History, this mech never appeared before "Day of the Departed."
Samurai Mech · Fire Mech · Golden Mech · Cole's Earth Mech · ElectroMech · Zane's Titan Mech · Salvage M.E.C. · Samurai Mech 2.0 · Firstbourne Mech · Lloyd's Titan Mech · Mech Jet · Cyber Dragon · Fire Stone Mech