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First appeared in Deathlok #1 in 1990 and was created by Dwayne McDuffie, Gregory Wright, and Jackson Guice. Michael Collins was a Roxxon Oil employee who became the second Deathlok after being betrayed by his boss Harlan Ryker.
Deathlok (Michael Collins)
Characters to Join the Fight
for Characters to Join the Fight in Who else should have joined the fight in Avengers: Endgame?
Suggested by adamj76
Any character from any universe! Who do you think it would have been cool to see jump in the fight against Thanos and his Black Order?