Head: Duke
Torso: Beachhead
Arms: Paris Pursuit Snake Eyes
Upper legs: ???
Lower legs: Tunnel Rat

Chuckles isn't the only undercover agent/specialist on the Joe Team roster there are several, many whose names remain redacted from all official records. Mace is one of them. Many of the missions he's worked on are so secret that his involvement has been scrubbed from all reports.
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This guy came together from a bunch of spare parts. I never had a Mace figure or had much interest in him but this head just screamed Mace.