This guy is so skilled he can probably beat Tendou in any competition.
With the villains as I said they are simply gang members and are not creatures. They are monsters in a metaphorical way as they treat others poorly. These guys kill and attack with no guilt which is great to watch villains be serious. Each gang also hires a bodyguard and they have a specific skill that is used in battle. There was a skilled gun slinger to a cue expert. Watching these guys were fun and each episode it shows Ken defeating them in a competition with their best skill. Ken always taunts them saying they are second best with him being the best. I mean this guy is impressive outside of battle and it makes a great image for him. The fights with them are damn good as they can be suspenseful as Ken first fights them out of suit. When things look bad he will get the chance to flee and come back in the Zubat suit. The hero fights the henchmen, the bodyguard, and the gang leader. Zubat actually kills some of his foes which will lead me to another thing about this show. He keeps the gang leaders alive though as he interrogates them to see if they were Asuka's murderer. Seeing a darker side of the hero is very nice as he can really get some impressive kills and attacks. (Also I really love that whip of his again I like whips being used as weapons)
Now with all the talk about gangs and murder this is a dark series. The first episode shows attempted murder, terrorism, and murder! The show also has a good amount of blood shown so that itself was really shocking to see in a toku show. The series continues with the dark tone as there is more bodies being dropped and so many innocent people being attacked. As I said before the villains attack people with ease they have tortured children! The show also has a great western theme and it works greatly with this show. The villains aren't creatures so seeing human fights helps the theme and the way of the battles are done continues to help the theme. One thing that is a little bad is how repetitive the show is. The Zubat action so far came in the end and there has been one or more bystanders killed in the five episodes. It's very little though as each toku show has some form of repetition.