This is lieutenant Reynolds of the 17th anti-air regiment. His 'Fire Ant' AA walker is great for making flying targets turn into molten metal, but when the ground troops finally climb the hill, skyscraper, mountain, landing pad, or duck hunting boat, life's a bummer.
This is Heavy Skaborr Mk. III serial no. 48192, aka Susan. For her, watching the fireworks is all well and good, but tearing through a tank from 200 yards with her long range MAG, or slashing a mech's legs clean off with her plasma sword when it gets too close to her AA counterpart means she is having a full day.
You aren't too bad at purist weaponry either. I like the use of elements on these builds... "Susan" has a good head on her shoulders, literally. The duck-hunting line was a nice bit of presentation, and of course the photography is good.