is a three-dimensional platformer(?)-puzzle game released April 18th, 2011, successor to the original Portal.
It's also just about the best game ive ever played
The Lab Rat comic isn't what introduced the basic concept of employee Doug Rattmann - that goes to the 'dens' he made throughout Portal, with cardboard "beds", milk cartons, and cans of beans among scribblings on walls not to trust GLaDOS, the artificial intelligence in control of Aperture Science's Enrichment Center - but the comic does elaborate on his character. Narratively, he functions as the catalyst to the plot, having manipulated spreadsheets to move her to to the top of the list of testing candidates and (assumedly) prompting the system to send a wakeup signal to her Relaxation Vault - the point the first game starts off - and ensure she gets to the Extended Relaxation Chamber, which is where 2 begins. In-universe, he is a paranoid schizophrenic acting as the only 'sane' man haha get it? (i hate myself too for that dw) surrounded by people that absolutely should know by now that giving the Robot With Murderous Intent access to neurotoxin would result in mass death. (which it did.)
As for why I love the game in general so much?
It fleshes out the universe of the games, makes the world feel more real (according to a newspaper article in a slidey window shelfy box that i cant remember what its called, old Aperture was constructed at the bottom of a 4km-/2.5mi-deep abandoned salt mine in the upper peninsula of Michigan - apparently a salty environent makes steel/iron rust faster than normal, etc), Portal's best speedruns are ~15 min whereas 2's are a bit under an hour, the Old Aperture (50s/60s area is great, 70s has The decor but it's just s a d)...