Hell Knight

The hell knight is a humanoid demon with a towering, goat-legged body, muscular arms, and a horned head. It shares the baron’s basic appearance, but has a tan torso, whereas the baron has a pink torso. This distinction makes the two demons visually identifiable during combat.

For a more detailed explanation of the Doom monsters, check out our Doom enemies database.

Origin and design

id Software introduced the hell knight as a weaker counterpart to the baron of hell, allowing Doom II maps to use a monster with high attack power without slowing down the action. Its animation frames are identical to the baron’s, but Doom’s palette-translation feature could not produce the required recoloring, so id Software included a separate second set of sprites with the tan coloring already applied. The hell knight therefore uses BOS2, a recolored copy of the baron’s BOSS sprites, rather than a runtime palette swap.

Combat behavior

The hell knight’s attack repertoire mirrors that of the baron of hell exactly: it launches a large, green-glowing fireball that travels in a straight line toward the player. In melee range it also swipes with its claws, dealing significant close-quarters damage. What separates it from the baron is its hit-point pool — the hell knight is given exactly half the baron’s hit points, 500 instead of 1,000, while retaining the same attack damage.

Role across the franchise

In Doom II and Final Doom, hell knights appear from early in the games and are often placed in pairs; in Doom II, their first appearance is MAP05 on Ultra-Violence/Nightmare and MAP06 on lower skill levels. Most maps avoid packs of hell knights because their combination of half the baron’s health and the baron’s full damage output can make groups disproportionately dangerous. In Doom 64, the hell knight gets the green color scheme, and the baron becomes red-orange with red fireballs. In Doom 3, the hell knight was substantially redesigned as a large bipedal creature with ranged fireballs and melee attacks. In Doom (2016), the hell knight returned to a bipedal form, with a very muscular build, clawed hands and feet, and melee attacks including punches and hammer-like slams; it has no ranged attack. Doom Eternal retains the modern hell knight’s melee-focused design, while the hell knight also appears in Doom RPG and Doom: The Dark Ages.

Technical notes

In the original Doom II source, the hell knight is assigned the internal name MT_KNIGHT. Its sprite prefix is BOS2; the baron’s is BOSS. The hell knight is a separate thing type from the baron (thing type 69 versus 3003) and has its own enum entry, MT_KNIGHT, rather than sharing the baron’s MT_BRUISER. It also has distinct alert and death sounds (DSKNTSIT and DSKNTDTH), with the death sound based on a processed recording of a jaguar. The two monsters do, however, use the same action functions, except that only the baron’s death runs the boss check used on E1M8.

All of the hell knight’s animation frames are identical to the baron’s. Doom’s palette-translation feature, used for recoloring players in multiplayer, cannot produce the required hell knight recoloring, so the game includes a full second set of sprites with the recoloring already applied. This makes BOS2 a recolored copy rather than a runtime palette-swapped version of BOSS.

Modders working in ports such as GZDoom can override hell knight behavior via DECORATE or ZScript, while Boom-compatible ports expose the monster’s properties through DeHackEd patches.

Tactics: how to defeat the hell knight

• Keep enough distance to give yourself room to dodge the fireball. The hell knight’s fireball travels at 15 map units per tic (525 units per second), faster than imp and cacodemon fireballs; at sufficient range it can be avoided by circlestrafing, while at close range it becomes harder to evade and can be lethal.
• Use high-damage weapons when you need to bring a hell knight down quickly. Its 500 hit points and relatively low pain chance make the super shotgun, rocket launcher, and plasma gun convenient choices; roughly three rockets, three point-blank super shotgun blasts, or 23 plasma shots.
• Do not stay in claw range after committing to a melee attack. The hell knight’s melee attack deals 10–80 damage, so close-range fighting is hazardous; if using a berserk punch, move back immediately after striking to avoid the counterattack.
• Give groups more room than a lone hell knight. Multiple hell knights can combine their fireballs while their attacks remain individually straightforward, and most maps avoid packs for this reason; fighting from a range that preserves room to circle makes their projectiles easier to avoid.
• Do not expect a baron of hell and hell knight to start infighting through their normal attacks in DOS Doom II. The two are separate monster types, but the original PC game has a hard-coded exception that makes them treat each other as the same species. In DOS Doom II, the exception can be bypassed when one damages the other through an exploding barrel; the exception was absent in the PlayStation version and Doom 64, allowing barons and hell knights to infight there.