The Spiderdemon, also known as the Spider Mastermind, as named in Doom II's and Depths of Doom Trilogy's manual, is the final boss of Doom, and appears again in the final episode of The Ultimate Doom, Thy Flesh Consumed.
"You guess the Arachnotrons had to come from somewhere. Hi, mom. She doesn't have a plasma gun, so thank heaven for small favors. Instead, she has a super-chaingun. Crap"
Powers and Stats
Name: Spider Mastermind
Speed: Superhuman (Can run almost as fast as Doomguy, which can run at 57 miles per hour)
Lifting Strength: Superhuman
Striking Strength: City Block Class (Can kill Doomguy in one hit by just ramming him)
Durability: City Block level (Can take a serious beating from the Cyberdemon and live to keep fighting)
Stamina: Unlimited due not being alive
Range: Hundreds of yards thanks to its chaingun
Standard Equipment: Its chaingun
Intelligence: Above Average (Led the invasion to both Earth and Mars at the same time, cut off any communications with Earth from Mars before the UAC knew what was going on)
Weaknesses: Nothing notable