* CompleteMonster: [[BigBad Grand Witch]] [[BadBoss Grandienne]] deliberately sent her children out to die, brainwashed one to kill another on several occasions, banished one to Hell, and resurrected two of them as brainwashed zombies. As fitting of the family theme in [=GoGoFive=], Grandienne stands for everything the Tatsumi family bond [[EvilMatriarch isn't]].
* CrowningMusicOfAwesome: [[https://www.youtube.com/watch?v=-OwMta4z_HI The Opening]] and its instrumental variants. Maybe, the most heroic sounding Sentai theme ever made.
** And it's not just the opening. The soundtrack as a whole holds a handful of nice tracks for those who're into Toku music. To start, try the HeroicResolve theme, "''[[http://www.youtube.com/watch?v=DdFYFmcz8uE Yuuki wo Nakuseba]]''".
** [[http://www.youtube.com/watch?v=oSnAlP3lRXk [=VictoryRobo=]]] and [[http://www.youtube.com/watch?v=-vBqtEPC8RU [=GrandLiner=]]]'s themes.
*** [=GrandLiner=] also has an slightly different instrumental version of its theme song. [[http://www.youtube.com/watch?v=lpcqVFt1Z2s#t=1m5s Pretty catchy too.]]
** Oh, and there's a ''[[http://www.youtube.com/watch?v=YWpw2-OPnbU Full-English]]'' version of the opening. And yes, [[CrowningMomentOfAwesome it's part of the official soundtrack]].
** And the "Victory March" that kicks in with [[FinishingMove Victory Prominence]]: "''[[http://www.youtube.com/watch?v=8ldjfd0Gmk8#t=2m16s Ken yo, hikari wo yobe!]]''". When it starts playing, you automatically know someone's boned.
* EarWorm: The opening song is ''made'' of these.
--> "''[[GratuitousEnglish Rescue Soldiers!]]'' Please become stronger!\\
Now is the time to sharpen your shining courage!\\
''[[GratuitousEnglish Save the earth! Save the life!]]''\\
Please hurry, ''Kyuukyuu Sentai [=GoGoFive=]!''".
* FanNickname: Venus: for Denus whose name came from Undine + Venus, and is similar in appearance to Venus. It even makes sense as Venus is a goddess that was born from waves.
** "Colonel Sanders" for Dr. Mondo Tatsumi, due to his uncanny resemblance to said Colonel.
* TheWoobie: Erika, a little girl who was on episode 17. She liked Matoi and did a lot for him, from washing his clothes to making dinner for the whole family. Matoi had to be harsh with her so she could go away from danger, which is kind of understandable. Her reaction, however, was totally heartbreaking.
** JerkassWoobie: [[spoiler: Zylpheeza is a villainous example. He may a horrible demon, but at the same time he watches his younger sister give her life to revive him, against his will, and has to watch his younger brother die after being forced shoot him by his own mother.]]
* VisualEffectsOfAwesome: It's not even that complicated of an effect, but seeing the Grandliner ''tower'' over a couple of Saimas is... satisfying.