Environmental Superhero Ecogainder

Ecogainder is a low-budget tokusatsu TV series, and while this usually means a weird late night show made specifically for an adult audience, in this case, it's actually an educational show aimed at kids. Ecogainder himself is an android sent from the future to educate the people of 21st century earth about preserving the environment, though he seems to focus all his efforts on one middle class Japanese family. The villains, trying to tempt this same family into wasting energy and not recycling are the Eco Crushers, Mudaana (played by AKB48's Sayaka Akimoto) and Hakais, who are working under the orders of Queen Deathgaia.

Mudaana and Hakais are the most interesting characters in the show, as the Suzuki family are just generic "everyman" types, and Ecogainder himself barely has a personality at all, beyond giving environmental advice. They're based on the old Doronbo Gang archetypes started by Yatterman and seen in a ton of shows and comics and videogames since, though they're missing a fat guy, having only the attractive woman and skinny guy parts of the trio. Hakais is a pretty good example of exactly how low the budget for this show was, as the weapon he wields is clearly just a plastic Doctor Octopus arm toy, not even modified or repainted.

What's interesting about those two is how their relationship with the Suzukis changes over the course of the series. A typical episode sees a member of the family thoughtlessly doing something that's mildly environmentally unsound, like forgetting to recycle, or leaving the TV on standby, at which point the Eco Crushers will turn up and aggressively state how great it is that the family are helping the cause of environmental destruction. Then Ecogainder shows up, and the three of them go off to the "battlefield", which is some kind of big white tent thing, and Ecogainder shoots his ecology beam and the Eco Crushers are banished away.

But over time, the Suzuki family's reaction to the Eco Crushers changes: at first, they're scared and confused when Mudaana and Hakais show up to harass them, over time, they treat the villains as a mild nuisance, and the series' big turning point is a few episodes from the end, when the kids are bored and turn the heating up specifically to summon Mudaana and Hakais so they have more people to play cards with.

I'm sure I'm not spoiling anything when I reveal that in the last episode, Mudaana and Hakais turn against Queen Deathgaia and help Ecogainder in the final battle. It's predictable, but still nice. Ecogainder is definitely no must-watch series, but it's only fourteen nine-minute episodes, so if you really need to see a cheap superhero show, this one isn't too painful. Be warned though, that the series focuses mainly on comedy and educational value, with pretty much no real action on offer.
This series is also known as Kankyou Choujin Ecogainder