For the Cellar Door Games videogame:
- Demonic Spider: The Atomic Tower. It has massive range, massive area damage, and can damage your monsters harder than anything in the game. Nothing can stop the damage once it's launched. Not to mention how powerful it gets in latter waves... Thankfully, the missiles can be tricked by clever monster placement, it can be stunned like any other tower in the game, and it has a low fire rate (0.10 shots per second meaning a shot every ten seconds).
- Goddamn Bats: Arguably, the Bog Towers and Holy Towers due to their percent-based damage.
For the My Little Pony: Friendship is Magic fanfic:
For the Cartoon Network cartoon:
- Adaptation Displacement: Villainous originally came from a series of web shorts made in 2012 for Ituriel's website That Place To Hang Out. It doesn't help that almost all of the artwork and shorts were removed off of the website, and the original shorts have been privatized on its main YouTube page, likely for legal reasons—as CN owns the IP now.
- Broken Base: The involvement of artist Ami Guillén (aka LemonTeaFlower) attracted a lot of controversy. Many have accused her of being a pedophile and a scammer on account of her NSFW drawings of underage (i.e. teenage) characters (drawn when she herself was underage) and her involvement in an infamous Kickstarter scam "Miss Officer and Mr. Truffles". Even her public apology regarding the drama didn't help. The backlash inspired a counter-backlash of fans outraged that so many were trying to slander her over drawings she made years ago and her artwork being used in a scam she was not a part of. It's often been used as a key example of fan entitlement and the culture of receipt-pulling found in many internet fandoms.
- Counterpart Comparison:
- Quite a few viewers have likened Black Hat to Count Bleck, for obvious reasons. He's also been compared with The Warden from Superjail!, as both are narcassistic men in top hats whose Lack of Empathy is only rivaled by their mysterious powers.
- The show shares a lot of elements with Evil Con Carne, in that there's a supervillain, a technicolor bear, a bumbling scientist, and an amorous woman with red hair. Though, these elements are combined for characters in the older show (and most of Demencia's hair is actually green). The central character in Evil Con Carne was also Latino, and Villainous was made in Mexico by a Mexican animator, and is dubbed first in Spanish.
- Some viewers have also likened Black Hat and Dr. Flug's dynamic (abusive Card-Carrying Villain and wide-eyed moe Butt-Monkey) to Murdoc and 2D of Gorillaz. Amplified in the English dub where Black Hat has a Cockney accent.
- Cult Classic: Who would have thought a 10-episode mini series (each of which are about a minute long) would somehow become just as popular, if not even moreso, than some of Cartoon Network's own traditional 30-minute shows so quickly?
- Estrogen Brigade: Dr. Flug and Black Hat are insanely popular among (especially) gals, if social media is anything to go by.
- Fanon: Most fans depict Black Hat as being some sort of demon.
- Friendly Fandoms: The fandom seems to be quite an overlap with the Wander over Yonder fandom, with a lot of crossover art being drawn (a lot of which happens to include a certain EVIL SANDWICH).
- Just Here for Godzilla: Quite a few people watch the show just because Markiplier voices 5.0.5.
- Nightmare Fuel: Black Hat's inspection of Lord Boxman brings us a couple◊ of◊ unexpected Nightmare Faces.
- Older Than They Think: Despite being marketed as such, this isn't the first animated show to come from CN Mexico. Rather, it was actually Santos Contra Los Clones, which followed a similar format as being a miniseries and having a short run time.
- Spiritual Successor:
- Testosterone Brigade: On the opposite end from the Estrogen Brigade (see above), Demencia seems dementedly popular among guys.
- The Woobie: Dr. Flug, who takes the majority of the abuse in the show and generally gets no respect from the nefarious Black Hat.