3 sources Action Comics Weekly #623 (25 Oct. 1988): "My Week in Valhalla"Justice League Quarterly #16 (Autumn 1994): "I Fought Groout, The Creature Who Came from the Cracks of the Earth!" The Warlord (vol. 1) #96 (Aug. 1985): "Nightmare Prelude!" | 6 characters
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