Job about historical predecessor characters:
Doom Guy (DOOM)
Doom Guy is character from DOOM Series. He is Space Marine that kills Demons in Hell, on Earth and in Space (On Mars ironically). He debuted on PCs, while being made by ID Software and later he was acquired by Bethesda.
His first game came out in 1993, which it could fit in Terry's slot, due to both being 90's Video Game Characters.
He is Iconic VG character and he would use DOOM ETERNAL Design (albeit with some DOOM 2016 due to fact that DLC was planned in 2018) to promote Doom Eternal game that was in 2019, but it was delayed to 2020.
DOOM is historical predecessor to Metroid Prime and Splatoon, which are both FPS Games in VG History.
If he was Included in Smash, he could use moveset from DOOM games like Shotgun as Side Smash or Meat Hook as Up B. He could be Heavyweight character with Crawl Ability. His Final Smash could be BFG 9000 and he could evaporate all fighter with that Final Smash.
I nominate my DOOM Slayer, because he could be historical predecessor to Metroid Prime and Splatoon, which is metroid and Splatoon actually. He could be Iconic addition to smash, which he could bring a lot of DOOM fans to Smash. Also, he could be Bethesda rep in Smash as AU DLC.