This did not take only 24 minutes, it took me more like 1 and a half hours, I just accidentally refreshed the page and so the clock went back to 0 minutes. Anyways, so for the contest I chose to do a combat type robot, actually this is more like a mech, I hope that's alright.
This robot specialized in close combat situations, as well as recon missions. She can climb up things very easily with her four arms, the front arms are stronger than the ones on her back and those are usually used to grab hold of the enemy while the others punch. The saying, 'I'll hold and you punch' comes to mind. (The back arms can also be folded up for better aero-dynamics). In addition her lightweight skelatal structure and material allows her to run at 170 mph. Booster packs can be attached to her legs for greater height in jumps, as well as almost any weapon can be equipped. She also is not resistant to EMP.
The jewel in the center of her chest gives her an unlimited power source and it will never run out. It's actually not really a jewel, and I forgot to add this in, it's actually a solid chemical that reacts with the air to create energy (all imaginary of course) so it needs to be open to the air to create the energy she needs. And she isn't nearly invincible, she doesn't have very much armor, so it's easier for her to be damaged. The only places that are very highly armored are her lower arms and hands and lower legs and feet, which is needed to ensure that she can punch and kick the enemy enough. The placement of it makes it easy for enemies to destroy it, destroying her main power source. Back up power will run for approximately 15 minutes before running out.
The cockpit is located behind the visor, behind several layers of a clear, almost unbreakable material.
Note: The green thing in her hand is a grenade.