As hip-hop’s original role-player, Kool Keith free-flowed perverted bathroom raps and battled alter-egos long before weird-hop was hip and Doom donned his villainous mask. Keith’s most notorious character was 1996’s Dr. Octagon, the extraterrestrial gynecologist who traveled through time and lifted skirts to Dan the Automator’s galactic beat. Now, after a few years of fooling around with a “Black Elvis” rubber wig, Keith has revealed Mr. Nogatco.

Nogatco operates on alien brains down a deliciously slimy alleyway called Nogatco Rd. (Dr. Octagon backward) — not that this is apparent beyond the cover art. The dismissal of plot saves Nogatco from becoming just a failed counterpart to the perfectly formulated Octagon, and its lazy, retro sci-fi develops oddly human characteristics. When producer Iz-Real (behind MF Doom’s VV2: Venomous Villain) switches his gurgling mars machine on autopilot — think sliding metal guitar, computer chimes and 1960s men-in-lab-coats dialogue — Keith is hypnotized into spilling the bizarre fetishes of half-sleep. “As a child growing up, collecting marbles and roaches / Little insects was my pets / Lightnin’ bugs under my sneakas / Scrape on the concrete, the green streaks,” Nogatco hisses on “Alpha Omega,” continuing with tales of elevator shafts, mink bras and lab rats.

Keith is currently working on several other projects, including the official Return of Doctor Octagon, and thus allows the devilish Nogacto to do whatever he pleases — his mind’s unfocused wanderings hold all the joy of dipping one’s fingers in sparkly grade-school goo, but not much more. Sage Francis and Sole make cameos to confess that Anticon guys have robot fantasies too, spilling their guts to the godfather of weird. “I’m more space than you,” Keith informs his many imitators on “Night Flyer” — and with this I must agree.