The Bechdel Test: Amazingly, considering the setting is an ultra-bleak Crapsack World where rape is a common occurrence, it passes. Multiple times, in fact. This might explain why, at least in the West, the series has a sizable female Periphery Demographic.
Paradoxically averted in the English dub, where – due to fan demand – several of the voice actors, including the three leads* (Marc Diraison as Guts, Carrie Keranen as Casca, and Kevin T. Collins as Griffith), reprised their roles. Still, due to the fact that nearly a decade had passed since the original dub, some of the secondary roles had to be recast.
Adonis - Kathryn Kapinski was replaced with Colin DePaula
Bazuso - Patrick Tansor was replaced with Russell Nash
Gennon - Fred Velde and Rick Mann were replaced with Steve Kramer
Bosgon - Richard Springle was replaced with T.J. Storm
Fountain of Expies: Berserk has been extremely influential in Japanese fiction, to the point where almost any hardcore, brooding badass owes his dues to the original hundred-man slayer (excluding the personality aspect; you won't find that very often in general).
Even females aren't safe: Cattleya is a good example of this.note Even if her background story is the complete opposite of Guts.
Mean Character, Nice Actor: Kevin T. Collins, Griffith's English voice actor, is quite honestly a gem when you hear how fun-loving he is in the bloopers. It's astonishing how the guy who drops the script in order to sing improvised musical scores is the same person who is playing the voice of Griffith and his much more horrendous alter ego Femto (which is really saying something since Femto technically has no speaking role during the Eclipse: it's the principle really).
Missing Episode: One chapter of the manga ( where during his transformation into a Godhand, Griffith meets the Idea of Evil (A.K.A God) who explains its origins and its goals) that should have been in volume 13 was supposedly pulled by Miura because he felt that it revealed too much about the setting at the time; it was later released as supplemental material.
No Export for You: Berserk: Millennium Falcon Hen Seima Senki no Sh? has only been released in Japan and Korea.
Unrated Edition: In the case of the the third movie, Descent, some scenes were considered too explicit for a regular theater audience, so two edits were made: the theatrical release that obscures some details and then the blu-ray release which has ALL of the details.