These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Complete Monster: Emperor Zambajil, ruler of the Boazanian Empire, where the horned upper classes are the rulers and the hornless are little better than slaves. Zambajil engineered the overthrow of his elder brother when he discovered his good-hearted sibling was actually hornless and proceeded to hold Boazan in his grip with the Fantastic Caste System, manipulating his brother's son Prince Heinel into becoming his pawn and puppet. By manipulating Heinel, Zambajil is responsible for his actions, including his war of conquest on earth with all the atrocities and deaths that resulted so the Boazan empire could gain more slaves. Eventually fearing Heinel's potential, Zambajil tried to have him killed. When Boazan is taken in the war and the hornless have won their revolt, Zambajil attempts to flee and when confronted by the Voltes team, he attempts to pin everything on Heinel and let his nephew take the fall for his own war crimes.
Ear Worm: To a lesser degree than Combattler, but the opening chimes easily stick in viewers' ears.
Fan Wank: As noted in The Other Wiki, there has been speculation among fan circles that possible research prior to Nagahama's then-upcoming stint as director of the Rose of Versailles anime may have influenced some themes and plot ideas for this show, such as those of revolution, social class upheaval, the medieval-esque setting of Boazan, the dramatic approach and the frilly dresses. Some Super Robot fans, who watched this show expecting pure hot-blooded action and are openly put-off with what they deem as excessive melodrama and angst, took things further by holding this theory to be the only explanation on why Nagahama would dare try to write "shojo sensibilities" into a Super Robot show that's supposed to be for young boys.
Filipinos Love Voltes V: The show has a decent old-school following in Japan, but it's very popular in the Philippines. It was dubbed into English and first aired alongside Daimos and Mazinger Z in the early 1980s until they were banned by the government. Voltes V and Daimos returned quietly in the early 1990s and again in 1999 with much fanfare, hyped as its (untrue) "second coming". After its 1999 revival it was dubbed into the local Filipino language.
Harsher in Hindsight: Look closely in the first episode where the Boazanian invasion armada was laying waste to the world's military forces and key cities...among the casualties and damage is a pair of conspicuously familiar twin towers. What's more disturbing is that this image was flashed right after the montage of the Liberty getting blown up.
Moral Event Horizon / Kick the Dog: You will see the incident where Heinel takes a little girl hostage so her father would be forced to cooperate in his schemes against the Voltes Team; only to find out later that he has already killed off the said girl afterward as the former if you think that the said action cements his status as a villain that is NOT to be liked; or the latter for simply being a way of the authors of telling the audience to be wary of how screwed uphe became from the culture that he has been brought up in.
Narm Charm: The Filipino-made English dub. For anyone who probably hasn't grown up watching this in the Philippines, first you'll be like, "Wha...?" after watching one episode in English and then you'll be tolerating it the next instance.
Especially to Americans like this Troper, the dub is at first hard to watch without bursting out in laughter.
Heinel's name in the said dub however, is straight-up cheese. Other Filipino fans better not get their hands on the movie where the dubbers/translators got the name from if they want to save their sanity and/or not die from laughing.