Heads: Cobra someone
Upper arms: Ice Viper
Lower arms: Lowlight
Legs: Alpine
Coat: Arctic Duke?

Terrence and Philip are Canadian researchers in the Arctic Circle. They were well known for playing pranks on other researchers. Now surviving above the snowline year-round in hopes to keep out of reach of the undead they have given up their pranks.
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These were made to use up spare parts. I had a lot of cold weather figures and wanted to use the parts and the entire South Park crew came to be built.