Here's a fanart birthday gift for  dracenmarx whose characters are Sunny del Sol and Marvin Arbóreo in the test chambers of Aperture Science run by GlaDOS.

Doing like the ways of Atlas and P-Body (Two robots in the Portal 2 co-op campaign), Sunny and Marvin are attended as test subjects to survive the chambers from 1 to 50 (generic number of chambers). They gain courage, logical sense, intellect and teamwork whenever they experience the perils such as android turrets, lasers, acid lakes, furnaces and other obstacles.

I know you like Portal games, Daniel, so I made your characters involved here. Thank you for being my good buddy. :hug:
Happy birthday and Merry Christmas! :party:

The portal guns are actually redrawn from two images, http://www.instructables.com/files/.....A3D0.LARGE.jpg http://a.tgcdn.net/images/products/.....plica_back.jpg, because I'm too tired to do the gun in different position. Same to the caution chamber signs taken from this list: http://cloud-2.steampowered.com/ugc.....85A82B784E3E8/

Concept and game © Valve
Characters, "Sunny" and "Marvin" ©  dracenmarx
Art by  kevindragon

EDIT: Sunny and Marvin's legs had errors (too long legs and Marvin's too big foot), so I made changes.