Following up the Mk49, we have the Mk89. When designing Mks I often have a process I follow, like a checklist of things they need to have. Around the time right before I came up with the 89 I was toying with how I could change this formula up to make a unique robot design. I ended up deciding what if I took an Mk head and just rotated it 45 degrees and viola, thats how I got this weird diamond head shape. The Mk89 is a long range unit, utilizing its high firepower rifle to pick targets off from afar. But it can also use its powerful thrusters to rocket towards the enemy in a bayonet charge. The 49 and 89 are some of my favorite designs so its no surprise they'd be some of the first I'd remake.