Yes—in the classic id Software family tree, Doomguy is related to Wolfenstein’s B.J. Blazkowicz through Commander Keen. B.J. is Keen’s grandfather, and Keen is Doomguy’s father. That creator-confirmed lineage connects the classic characters; it does not establish that every later Doom and Wolfenstein game shares one continuous canon.
How Doomguy and B.J. Blazkowicz are related
The family tree runs through Commander Keen, also known as Billy Blaze:
| # | Preview | Product | Price | |
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DOOM Eternal: Standard Edition - PlayStation 4 | $27.49 | Buy on Amazon |
| 2 |
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DOOM: The Dark Ages – Xbox Series X | $31.49 | Buy on Amazon |
| 3 |
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DOOM: The Dark Ages – PlayStation 5 | $65.45 | Buy on Amazon |
| 4 |
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Doom - Xbox One | $26.99 | Buy on Amazon |
| 5 |
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DOOM + DOOM II (Limited Run Games #144) - for Playstation 5 | $44.48 | Buy on Amazon |
B.J. Blazkowicz → Commander Keen (Billy Blaze) → Doomguy
In other words, B.J. is Doomguy’s great-grandfather. The more precise way to describe the link is to name Keen: B.J. is Keen’s grandfather, and Keen is Doomguy’s father.
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- Gain access to the latest demon-killing Tech with the DOOM Slayer's advanced praetor suit, including a shoulder-mounted flamethrower and the retractable wrist-mounted DOOM Blade
- Upgraded guns and mods, such as the Super shotgun's new distance-closing meat hook attachment, and abilities like the double Dash make you faster, stronger, and more versatile than ever
- You can't Kill demons when you're Dead, and you can't stay alive without resources. These tools are the key to your survival and becoming the ultimate demon-slayer
- A new class of (destructible) demon
- Battle mode is the new 2 versus 1 multiplayer experience built from the ground up at id software
Who confirmed the family tree?
In a January 30, 2018 report, Ars Technica recounted an exchange with id Software co-founders Tom Hall and John Romero. Hall said, “The lineage isn’t a theory. Fact.” Romero clarified the relationships: B.J. Blazkowicz is Commander Keen’s grandfather, and Keen is Doomguy’s father.
It is a piece of classic id character lore, not an explanation for the plots of the games. The connection is fun background rather than a major story revelation.
Rank #2
- Developed by id Software, DOOM: The Dark Ages is the prequel to the critically acclaimed DOOM (2016) and DOOM Eternal that tells the epic cinematic origin story of the DOOM Slayer’s rage.
- In this third installment of the modern DOOM series, players will step into the blood-stained boots of the DOOM Slayer, in this never-before-seen dark and sinister medieval war against Hell.
- A dark fantasy/sci-fi single-player experience that delivers the searing combat and over-the-top visuals of the incomparable DOOM franchise, powered by the latest idTech engine. With a customizable difficulty system, it’s the perfect entry point whether you’re new to the franchise or a long time fan.
- As the super weapon of gods and kings, shred enemies with devastating favorites like the Super Shotgun while also wielding a variety of new bone-chewing weapons, including the versatile Shield Saw.
- Experience the origin story of the DOOM Slayer’s rage in this epic, cinematic, and action-packed story.
Does this mean every Doom and Wolfenstein game shares a canon?
No. The reported confirmation establishes a family connection among the classic characters; it does not prove that every later game, reboot, or timeline in either series belongs to one unified continuity.
Bethesda’s official Quake Champions page lists both BJ Blazkowicz and the DOOM Slayer as playable champions. That shows they appear in the same crossover roster, but a roster entry does not establish their family history or settle continuity across the franchises.
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Rank #3
- Developed by id Software, DOOM: The Dark Ages is the prequel to the critically acclaimed DOOM (2016) and DOOM Eternal that tells the epic cinematic origin story of the DOOM Slayer’s rage.
- In this third installment of the modern DOOM series, players will step into the blood-stained boots of the DOOM Slayer, in this never-before-seen dark and sinister medieval war against Hell.
- A dark fantasy/sci-fi single-player experience that delivers the searing combat and over-the-top visuals of the incomparable DOOM franchise, powered by the latest idTech engine. With a customizable difficulty system, it’s the perfect entry point whether you’re new to the franchise or a long time fan.
- As the super weapon of gods and kings, shred enemies with devastating favorites like the Super Shotgun while also wielding a variety of new bone-chewing weapons, including the versatile Shield Saw.
- Experience the origin story of the DOOM Slayer’s rage in this epic, cinematic, and action-packed story.
Bethesda describes DOOM: The Dark Ages as a prequel to DOOM (2016) and DOOM Eternal, framing it within the modern Doom series. That product description does not discuss B.J. or confirm that the classic family tree applies across every modern game.
Quick Recap
Best Value
- DOOM + DOOM II on a region-free physical disc.
- Includes: DOOM, DOOM II, TNT: Evilution, The Plutonia Experiment, Master Levels for DOOM II, No Rest for the Living, Sigil & Sigil II, Legacy of Rust (a new episode created in collaboration by id Software, Nightdive Studios and MachineGames).
- A new Deathmatch map pack featuring 25 maps
- Total of 187 mission maps and 43 deathmatch maps in DOOM + DOOM II
- # of Players: Single System 1-4, Local wireless 1-8, Online 1-16
Rank #4
- A Relentless Campaign: There is no taking cover or stopping to regenerate health as you beat back Hell's raging demon hordes
- Return of id Multiplayer: Dominate your opponents in DOOM's signature, fast-paced arena-style combat
- Near-Limitless Gameplay: Doom SnapMap – A Powerful, but Easy-to-Use Game and Level Editor That Allows for Limitless Gameplay Experiences on Every Platform
- Entertainment Software Rating Board (ESRB) Content Description: Blood and gore, intense violence, strong language
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