The joke is that Gekiganger 3 exists to be exactly what every 80s mecha fan thought they were watching, right down to the poses and the earnest nonsense dialogue. It's a love letter written by people who genuinely loved the thing they're parodying. Three high school kids combining their robots into one giant robot to save the world plays completely straight, which is precisely why it's hilarious.

Ken, Joe and Akira are three high school students, each with a mecha of their own. To defeat the villainous Prince Akara and Emperor Hyperion, they have to merge their three machines into Gekiganger III. The OVA stitches together scenes from Nadesico with a new "movie" and spoofs many 1980s mecha series, mixing sci-fi robot action with comedy. It's a love letter to classic mecha anime that refuses to take itself seriously. Perfect for anyone who grew up loving 80s giant robot shows.