So he's a sue or not?

Here's the consolidated list.

Episodes 1-4, 9-10, 12, 16-18, 21-24, 26-29, 33-36, 39-48

14 is a "filler" that I quite like, but it's super wacky and WTF, so YMMV. Definitely not essential.

Man that is ten skipable episodes before the half way point, this show was fillertastic. Thanks though, gonna get a batch down and try the first half of the list.

He is. There's no avoiding it.

The second half is definitely more arc-heavy, with a few 2-parters and a couple 3-parters.

TBH, there are a couple in the last 10 episodes that are skippable were it not for relevant plot elements. Episode 43 is one of those.

Also, you may want to watch GABRINCHO OF MUSIC before episode 39, which includes characters from that movie. It's not strictly essential, nor is it particularly good. The plot is pretty well summarized in episode 39, so it's up to you if you're feeling adventurous.

I'll be interested to know what you think watching episodes back-to-back. Kyoryuger was my first "watch it as it's broadcast" sentai series, and it convinced me that Sentai is better when watched week-to-week.

Wonderful Execution, great characters both evil and good. Great use of CG mecha and suit/models. 11 heros and a new dark hero that never turned good (thank god). Loved it. Going to miss it dearly.

...So a villain?