not even lobo could pull the mask off in lobo/mask in fact mask heals faster then lobo does and from NOTHING. He and lobo destroyed entire worlds and that was even before the mask was put on lobo, the mask said specifically nobody can take the mask off less it wants to be taken off.
thor cannot hurt the mask either as i said above lobo destroyed almost every part of the mask sept for one little peace then he destroyed that as well but the mask regenerated totally and was ready to go at it again
thor cannot teleport it away its been tried and the mask itself can create dimensional portals
the mask is like a GL ring sept it makes its wearer unkillable what i mean by this statement is that it can do whatever the wearer wants from crazy stuff like summening armies of animals, killing people with bottomless cups of coffie, and such.
magic can hurt the mask and the person under the mask can be effected what i mean by that is lobo used a guilt grenade and someone else used a voodoo doll but you see even then these things wont destroy the mask, the voodoo doll was totally destroyed and the mask turned to dust even then he regenerated king tiger used magic draining arrows and the mask still was able to get up afterwords
its pointless fighting the mask it cannot be killed