The Baalgar is a large demonic brute bipedal in nature originating from Hell, known to be very aggressive and rip and tear anything in it's way.
A notable Baalgar is The Cyberdemon from DOOM (2016). The Baalgar should not to be confused with The Cyberdemon from other DOOMs, or the Harbinger of Doom, they are very different they only share the name in Hell's armies.
The Baalgar is enhanced with cybernetics including an arm with flame-thrower and missile features that originated from the UAC. The demon was released into the Lazarus Labs when Olivia Pierce released the demons who were held captive there, there it rampaged until it was slayed.
The Doom Slayer battled and defeated it twice even though the species was actually very thick in body mass and very brutish, also being armored with a Keratin-like materia, and having greater endurance and strength making it fit to call them Hell Lieutenants.