A portmanteau of the words "Old" and "Otaku": i.e. an old person that comes off as disenfranchised with Otaku culture; seemingly uninterested in current trends in anime fandom, but is still passionate about old anime because "they just don't make 'em like they used to!".
Jack: So what do you think of the Summer line-up? Anything you're looking forward to seeing?
Ben: Pfft, I'm not interested in that moé weeaboo crap. Cowboy Bebop was the greatest anime ever made! The Japanese should know that by now. Why do they even bother trying?
Jack: Oh Ben, you're such an Oldtaku.
Ben: Pfft, I'm not interested in that moé weeaboo crap. Cowboy Bebop was the greatest anime ever made! The Japanese should know that by now. Why do they even bother trying?
Jack: Oh Ben, you're such an Oldtaku.
by Mizuki_Takashima December 1, 2013
An elder otaku. The highest population of oldtaku are Gen X-ers and Millenials. These otaku were around when anime was on VHS tapes and/or during the transition from VHS to DVDs that had to be purchased in stores such as Suncoast or SamGoody. They most likely watched anime on Midnight Run and pirated anime on their windows 95. Oldtaku are not restricted to watching only vintage anime, however if you tell them you are a fan of Evangelion or Cowboy Bebop you better be talking about the originals.
by MandaB September 26, 2023