Tinkering
 
I wanted to do this one ever since seeing Rainbow Rocks! :D
 
Engineer  
Real Name: Pinkamena Diane Pie  
Role: Area Denial  
Favorite Number:  
Pinkie spent much of her early life as a rock farmer just outside of Ponyville, until the fated day she found her love for throwing parties and building gadgets. Learned in the skills of machine construction and repair, and having spent years as a professional party caterer/roadie/mercenary-for-hire, she has several toys and gadgets built for celebration that have been weaponized.
 
I’ve always held that Pinkie Pie was likely the second smartest of the Mane 6, as despite her hyperactive personality, she remembers everypony in Ponyville, seems to know things that others would miss, and I sort of suspect she builds her gadgets, which were originally going to be the stand-ins for the buildings (party cannon = sentry, welcome wagon = dispenser, Pinkie-copter = teleporter) though I never did come up with a creative alteration for them.
 
Rainbow Rocks solidified it for me when Pinkie was the only one to understand Twilight’s techno-babble.
 
Art (C)  
MLP:FiM (C) Hasbro/Lauren Faust  
TF2 (C) Valve