The Sentry Bot - "Day of Wrath"

This drawing was commissioned by me and drawn by setyna:
https://twitter.com/setynaart
https://www.instagram.com/setynaart/
I have permission to distribute this work.

A simple illustration of the Sentry Bot and the Sovereign Phalanx from my Doom rewrite fanfic "Day of Wrath."
The Sentry Bot is a mysterious miniature robot displaying unusual levels of curiosity and resourcefulness, and has joined the Doom Slayer as an unexpected and valuable companion on his journey across Mars.
Behind it is the Sovereign Phalanx, a mobile artillery platform built by the Sentry Bot to better aid him with a variety of heavy artillery cannons and attacks. The Phalanx is not a common utility and actually appears in the form of a power-up.

This drawing is not to scale.
The Sentry Bot is around 1 foot tall and normally sits on the Slayer's shoulder as a miniature autocannon.
The Sovereign Phalanx is around 20 feet tall and is equipped with railguns, missile launchers, rocket launchers, machine guns, tank guns, flak cannons, a central plasma accelerator, and arm-mounted grind cutters that act as "mega chainsaws."

"Day of Wrath" is mainly posted on SpaceBattles
https://forums.spacebattles.com/threads/day-of-wrath-doom-2016-eternal-rewrite.846388/
And AO3
https://archiveofourown.org/works/26011756/chapters/63245599