Donald, an electrical engineer in El Paso, Texas, made this mech inspired by Yoshi from Super Mario Bros. You can see more pictures at the link, as well as similar past projects at his website.

Link via DVICE | Artist’s Website

Instructables user J_Hodgie made a papercraft mech that moves as a handle on the base is cranked. It’s made to resemble the Mad Cat mech from Battletech.

Link via Make

This guy made a Mecha {wiki} costume for Halloween and spared no expense.

Sheet metal, aircraft aluminum, and other parts: $600.
Rivets, bolts, hardware: $250.
Tool purchases/rentals: $200.
Spraypaint: $90.
Truck rental to carry costume: $210.
Hours: 250+.
Looking like you could take down a tank: priceless.

It’s a good thing he rented a truck. That’s a lot of weight to walk home in, considering he couldn’t fit through a bus door. -via reddit

Thanksgiving may be over, but turkey-related madness continues! Here’s a weaponized turkey mecha that is both whimsical and technically elaborate by Adrian Drake of Brickfrenzy: Link – via The Brothers Brick