Suggested by Sonic The Demolition Man has basic super strength which isn’t bad. It’s definitely better than nothing but Etrigan’s super strength is in a whole different weight class. He wouldn’t need to worry about taking as many of Demolition Man’s attacks as he needs to. Additionally Etrigan has his fire balls which will force The Demolition Man to keep his distance. This is one fight where the demon’s going to take the win. Etrigan wins.
Etrigan makes barbecue of Demolition Man. Black Powder explodes when exposed to flame, and Demolition Man knows it.
Demolition Man’d definitely know that real well. He should politely surrender right at the start