These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Ho Yay: Stalker with a Crush, The Titanium Titan's obsession with Rodolfo reeks of this. There even was a part of an episode featuring his fake Heel-Face Turn where they appeared to almost share a kiss if Manny hadn't cut in.
Moral Event Horizon: Wanna know what makes The Golden Eagle Twins' Karma Houdini all the more infuriating? They were set to fire a laser from their bli- Er, zeppelin to obliterate the Miracle City Community Park, not even caring about killing an old lady with puppies and other innocents in the process, just to build their own motocross park! Many of the evil acts committed by the fake heroes were mostly played for laughs, but this actually goes too far!
It gets worse. A picture and description on the creator's Deviant Art shows that if the series had continued, it would have been revealed that these two somehow had a son together. Want more? He's probably Django's father!
For the same main reason as Puma Loco and Sartana, the confirmed future relationship between Zoe and Django can also be seen as this.
Another possibly confirmed secret about weird relationships: Apparently, Sergio and Diego both are unable to let go of their obsession with Frida and wind up making artificial replicas of her (Frida-Bot and Guaca-Frida respectively) for wives. Yeah...
Also counts as Nightmare Fuel. In "Silver Wolf", Frida develops an inflactuation with the titular teen bad boy to the point of completely disregarding Manny. But as it turns out, it was really the Titan once again attempting to lure her away from/finally get rid of Manny (and probably her too) for good. It was all just part of the plan, but the fact that this was a grown man and lunactic using border line romantic tactics on a tweenage girl is still very disturbing.
Does anyone remember that episode in which El Oso fell in love with/tried to whoo the Bear Princess...who turned out to be an actual bear? Bonus in that Manny and Frida, though had to help because they owed El Oso for saving them earlier, really made no objections to the pair. At least she rejected him at the end.
Certain snippets of the gross out/potty humor of this series can be seen as this.