Iron Man #154 1982

Iron Man #154, published by Marvel in January 1982, features the story 'The Other Side of Madness!' Tony Stark, as Iron Man, confronts the deranged Unicorn, who has escaped his cryogenic prison and taken hostages. A fierce battle ensues, culminating in Iron Man revealing the truth about Titanium Man's fate. The Unicorn, disoriented, then tragically walks into the ocean, seemingly drowning. This issue is notable as part of the acclaimed David Michelinie, Bob Layton, and John Romita Jr. creative run, and for the apparent demise of the Unicorn.