How about Gao White's theme? It's by Mitsuko Horie, which helps a lot.
The afformentioned opening is this, sure, but how about the All Cast special version? (and yes, they included the Title Scream in the beginning too!)
Captain Obvious Reveal: The Org Master is a figurehead for the Highness Duke Orgs. Considering most of Yabaiba and Tsuetsue's scenes involve them kissing up to the Highness Dukes and how little the Org Master is mentioned, this revelation is pretty obvious.
Rouki who was seen as a much more interesting major antagonist compared to the Highness Dukes and is regarded by fans to be the best part of the show and the reason the Ura arc is considered the peak of Gaoranger, to the point that his Power Rangers counterpart was made into a legitimately separate character and was in some way Spared by the Adaptation.
Ditto for the comical Yabaiba and Tsuetsue, whose playful antics and personalities were much more intriguing to fans than most of the other major villains. They even had the same treatment as the aforementioned Rouki above in Wild Force.
Germans Love David Hasselhoff: Despite having a So Okay, It's Average reputation in almost every other country, this series is crazily popular in Vietnam, even as of the time of this writing (February 2019) is still widely remembered, referenced and most likely the first one Vietnamese people think of when talking about a Sentai series. This is because Gaoranger was the first Sentai series to be imported in Vietnam in around 2003 - 2004, and being one of the few things available on DVDs and VCDs for the kids to watch at that time, it spreaded very widely around the country.
Shout! Factory's US DVD release of this series came out in December 2018, the 25th anniversary year of Power Rangers.
In this series, we have Sotaro Ushigome, a character who is a former sumo wrestler. One series later, we get a character played by an actual former sumo wrestler.who? Yujiro Shirakawa, who plays Ikkou Kasumi in Hurricaneger, had a very short stint as a professional sumo wrestler before switching to acting.
This wouldn't be the last time that Tetsu Inada would play a demon named Shuten.
Ho Yay: Gao Red and Gao Yellow, and Gao Blue and Gao Black are goldmines for this.
Nightmare Fuel: Gao Blue's brutal death in episode 30 is paired with blood, disturbing laughter, and blood-curdling sound effects. If that scene didn't scare you off from playing Super Sentai in your backyard as a kid, you are truly jaded.
Replacement Scrappy: Rasetsu is viewed as an utter lame letdown of a main antagonist after the Rouki/Ura arc, as he has neither the cunning and complex scheming of Ura, being more interested in eating than anything else for most of his appearances, nor the characterization or coolness of Rouki, leading to a villain that most feel is generic and takes until his final two episodes to do anything of note, and to boot his final battle is underwhelming with most of the stakes coming off his own servants rather than himself, and him serving as the leader of the three Highness Dukes after their revival only seemed to fuel his reputation even further. He's so disliked as a character that many fans consider his Wild Force counterpart, Mandilok, to be a vast improvement over him.
So Bad, It's Good: The Korean "Jungle Force" opening: "Power, Power, Pow!!!".
Seasonal Rot: Most fans agree that the show declined in quality once the Rouki/Ura arc ended, with Rasetsu being seen as an utterly boring and bland villain with little to make him compelling or entertaining and the lack of a secondary major villain like Ura had with Rouki (with the closest thing to that being DoroDoro, but he only appears towards the end of the arc) makes the arc little of interest to follow.
They Wasted a Perfectly Good Plot: The Rasetsu arc seems to set up both Yabaiba and TsueTsue for a redemption (or at least a defection) as both start to figure out just how bad of a deal they have with the Highness Dukes Orgs' abuse and mistreatment of them, culminating in Yabaiba turning on Rasetsu out of anger for their callous use of a dying hornless TsueTsue as a Meat Shield and even saving Tetomu from his grasp. Sadly, this realization goes nowhere as when Yabaiba has TsueTsue resurrected when fishing her up from Hell she ends up bringing the three Highnesses back with her and instead of being angry at how she was used is simply doubly insanely devoted to them and talks Yabaiba out of trying to walk out of being a villain easily which made the whole emotionality of the arc sub-plot feel entirely pointless since they were going to be treated as villains and serve their masters loyally regardless.
Charcoal Grill Org, he was once an evil Org who changed his ways when he realized that he did not like hurting people and instead felt joy from helping them out and satisfying people with his meals, he assumed a human form to hide among humans to escape the Org/Human war and is succesful for thousands of years until his spotlight episode where he's constantly harassed by Yabaiba and TsueTsue who want to recruit him so he can make meals for Highness Duke Org Rasetsu and eventually gets killed by them and resurrected as a giant mindless monster out of spite for his defection which forces the tearful GaoBlack and Yellow, who he had befriended, to kill the one good Org there is. Luckily, the ending of his episode implies that things will get better for him as he's seen back alive in his human form serving grilled food to Fuutaro/GaoGod.
just screams this. Especially in the Super Sentai Spirits 2006 concert, where Yukio Yamagata came out with no shirt and a fur coat to really sell it.