No, BJ Blazkowicz and Doomguy are NOT related.

The Quirks of Cute Censorship in Video Games

Doom 1 Sucks The Most - The Briefest Retrospective

The Doom Game We Never Got (Sort Of) - Tom Hall's Doom Bible

Doom 2 Sucks 2 - A Critical Analysis

The Wolfenstein 3D Sequel We Never Got (Sort Of)

BJ, The Rat - a Wolfenstein Essay

Trying to Make Sense of Doom 2's Maps - An Interpretation

Doom 64 - An Overrated Masterpiece Of Coal

Doom Graphics And Audio in other id Games (Doom 64, RPG, Quake)

The Quirks of Duke Nukem 3D's Censored Ports (DOS, PS1, N64)

MORE Wolfenstein 3D Graphics in Doom (and Vice-Versa)

Wolfenstein 3D Graphics And Audio In Doom (And Vice-Versa)

The Quirks of German Doom 3

The Quirks of German Doom 1 & 2 (DOS + GBA)

The Quirks of German Wolfenstein: Youngblood

The Quirks of German Wolfenstein: The New Colossus - Retrospective

The Games That Never Were - My Lost DOOM WAD

The Quirks of German Wolfenstein: The Old Blood - Retrospective

The Quirks of German Wolfenstein: The New Order - Retrospective

The Quirks of German Wolfenstein 2009

The Cuteness of Details in Wolfenstein 3D

MOVING - Full WAD Playthrough (No Commentary)

MOVING - A Doom Walking Simulator (Release Trailer)

The Quirks of German Return to Castle Wolfenstein

The Inevitability of Doomguy

The Quirks of German Wolfenstein 3D (feat. Rebecca Heineman)

Secret MyHouse.WAD Ending?

Recreating DOOM Levels and How Memory Works

The Quirks of German & Australian Left 4 Dead (ft. @Gggmanlives)