I looked up the major villains from Tamers, I still say Adventure had the best.
Kurata from Savers especially stands out for me as he's the only genuine human villain that's evil of his own accord. And he really is truly detestable...
Oh god Kurata. He did his job of detestable villain, although when
he transfered himself into belphemon I thought he became meh.Whatever. I didn't know "02" referred to 2002.
It's just nit picking on my part, so sorry.