Machining Darkface

Starter - Young Executive, Crimebug

8 Machining Crits
4 Machining Heals
4 Other Crits

4x Machining Mosquito
4x Rebel Mutant, Starshield
3x Machining Slater
3x New Face Mutant, Little Dorcas

4x Machining Red Soldier
4x Machining Mosquito mk II
3x Machining Mantis

4x Machining Warsickle
4x Intimidating Mutant, Darkface

4x Machining Destroyer
4x Poison Spear Mutant Deity, Paraspear

Machining Darkface is a deck that focuses on striding into Machining Destroyer so that Darkface will adopt the Machining name and all of your rear guard's abilities will be active while retaining Darkface's on-stride skill.  You would argue that Darkface's on-stride skill isn't as useful as Machining Destroyer's Vanguard stun ability.  You would be correct in making that argument.  However, the ability for Machining Slater to build soul in conjunction with Darkface's GB2 effect will supplement Darkface's on-stride skill so nicely that it will compensate for the lack of support the build faced in GSet4.

The nice thing about this build is that it compensates for its bad match-ups with your other ride.  Machining Warsickle is great against rush decks, grade 2 game decks, and decks where the Vanguard stun is more important than sickening amounts of card advantage.  Darkface fairs better for match-ups that dissolve your board presence, making Destroyer's skill unusable, like Link Joker, Brawlers, and other such builds with a heavy emphasis on control.  By having multiple facets to compensate for each side of the deck's bad match-ups, the deck ends up being extremely solid all-around.

While I wouldn't argue that this build is better than pure-Machining, it has several better match-ups.  Additionally, this is the optimal way to build Darkface in my opinion, due to the G-Bug support being trash tier.