In "Tangled Web" she wears a kimono and has her hair up, looking like a traditional Japanese girl. Much to her chargin. She even wears a pair of geta on barefeet. She later ditches the geta during the showdown. And near the end, she has her hair down.
Jack. Just... Jack. Geeky *and* evil!
This troper remembers an episode where Mala-Mala Jong stuck Jack to the wall with the Silk Spitter and tore off Jack's trousers, leaving him in just goofy print underpants. It was just to get a Sheng Gong Wu for a final step for an evil scheme, but .......kind of kinky for a kid's show.
Not something that appeals to this troper, but Youtube has shown how many Chase Young fangirls drool over a Bad Future episode because we have Chase in blue-and-white stripped boxers and tied to a weird machine that paints his stomach yellow while water constantly drops on top of his head. How many fetishes does that appeal to?
The shippy-ness between Wuya and Katnappe. Especially in Katnappe's first appearance, where Wuya has her mouth hanging and panting while seeing Katnappe in her catsuit.