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.
Three high school mecha pilots stand as Earth's last defense against the tyrannical Emperor Hyperion and his ruthless commander Prince Akara. Ken, Joe, and Akira each control their own giant robot, but only by combining their machines into the unstoppable Gekiganger III can they hope to stop the invading forces. What begins as a straightforward battle for survival quickly spirals into absurdist comedy as the show gleefully parodies every super robot trope from decades of anime. The tone shifts wildly between genuine action sequences and ridiculous over-the-top humor. Characters deliver earnest speeches about friendship and justice while their robots perform impossible acrobatics and transformations. The OVA pulls from various sources to create something intentionally campy, knowing exactly when to wink at its own ridiculousness. It's a love letter to classic mecha anime that refuses to take itself seriously, packed with enough hot-blooded action sequences to keep things entertaining even as it mocks the genre's conventions. Perfect for anyone who grew up loving 80s giant robot shows or enjoys comedy that celebrates the absurdity of its own medium.