Alternative Character Interpretation: The Unborn possessing Xion in his debut can either be his sister's vengeful spirit or the Unborn posing as his sister's spirit, and may or may not be the same Unborn that appears in 4. You decide!
Awesome Music: It's vastly overlooked due to this series' cult-like status, but some of the music is top-notch. Take the opening to 3 for instance. The soundtrack from 2 should also be called to attention, as it sounds like the long-lost cousin of Guilty Gear. The arcade music to 2 is no slouch either.
It goes back to the first game. This is Uriko's boss theme.
Fox has developed a fanbase over the years, despite only appearing in the first game in the series. He was one of the most requested characters fans wanted to see come back, and his beast form is very popular with furries. Some even prefer him over Jenny.
Xion was effectively the new face of Bloody Roar 3, being sold as this new fighter with a unique Zoantrope transformation (Which doesn't even use an animal name, just the edgy sounding "Unborn" title). In this game, Tylon takes a backseat and the plot is changed into what would become the Gaia's Vengeance plot in 4 (And story-mode is replaced with a standard arcade mode). This was somewhat ignored due to the game being a Even Better Sequel in combat mechanics, but at the cost of story presentation.
The same deal happened with Cronos with his unique Phoenix transformation in Primal Fury, who was a major player in many characters scenarios in Primal Fury. However, the old cast was still around and relevant, with Cronos having interactions with half of them, and their story wasn't forgotten.
Related to this is whether or not there's a connection between Uranus and Cronos. In 3 and Primal Fury/Extreme, each character fights a person that is somehow linked to them (for example, Kenji/Bakuryu fights Yugo on the last stage to prove his worth to his big brother). Cronos faces Uranus, instead of Ganesha or Yugo, who are connected to his storyline.
It's speculated that Uranus may be the wife of King Orion, which would make her Cronos' mother. Supporters point out that Cronos' backstory says his mother was killed in a war along with his best friend, Jane (aka Shina), the latter of whom was revealed to be alive. The similarity of Chronos and Uranus' names (both Greek deities) are also taken as a hint at a deeper connection. Detractors point out that Uranus and Chronos look nothing like each other, and more importantly that official sources state there's only a five- or six-year age difference between the two. Uranus' lack of an ending sequence in all of her appearances doesn't help either of these arguments.
Uranus. She has most of the traits associated with Final Boss Uriko from the first game — the lightning powers, Teleport Spam, etc. From the beginning, she outclasses her foes, but upon accessing her Chimera form, her strength increases exponentially without losing speed. She can also immediately switch between her human and beast forms. Her Hyper Beast mode, on the other hand, allows her to retain her human shape, but gives her the moveset of her beast form. For these reasons, it's no wonder that Uranus is usually banned from competitive and Tournament Play.
Ryoho, being an outright SNK Boss, is no better. For one, you fight him alongside Mana (who is in her Ninetails form). Mana usually serves as a distraction, allowing Ryoho to follow-up with devastating blows, the worst of which is a stance which unleashes a powerful punch the longer he holds it. Should he fall, Mana sacrifices her health to recharge his, taking her out of the battle, but giving Ryoho a second wind. His beast form, the Dragon, is the largest of all the fighters, with tremendous range, an OHKOfirebreath attack, and resistance to flinching. Like Uranus, he stays as a human in Hyper Beast Mode, and gains the fireball projectiles of his beast form. His dragon form happens to be the final boss too. The good news for that is that his health bar will already be emptied, so you could win just by simply dodging until either his beast gauge goes empty too and just inflict a few punches, or wait out the time limit. You want to do this, otherwise, it's game over.
Furthermore, a part of the gameplay mechanic in Bloody Roar 4 allows you to sacrifice your health to charge your beast gauge. If a player would take control of Ryoho and use this, they will find that his health will not be subtracted, allowing Mana to spam beast drives with no apparent consequence.
Heartwarming Moments: Yugo discovering Kenji in the rubble of Tylon Corporation, and his decision to adopt him in his care. They start behaving like brothers more than father and son. Yugo even took up professional boxing just to support the both of them.
In Bloody Roar 4, Gado won't admit it to Shina, but he does express to Mana that he deeply cares for Shina, even openly ignoring the fact that she isn't blood-related. His smile at the end seals it.
Popular with Furries: As can be expected, since the fighters all morph into beast forms during play.
Ron the Death Eater: Many portrayals of Chronos in fanfiction often involve bashing him to no end and making him a gay, whiny, emo/snobbish brat who often is killed in various different gruesome ways. He was never really shown as wangst-ridden, spoiled, or gay either (bar the mistranslation noted in his section of the characters sheet).
The Scrappy: Most of the fandom doesn't take lightly to the new characters introduced in 4 (of the four, Reiji and Mana seem to get the least flak), although this also overlaps with the fandom's hatred for 4 in general. To elaborate: Those characters (Nagi in particular) take center stage in front of all the other characters in all forms possible (the DVD packaging, the advertising, the introduction video, even the character select screen has Nagi immediately selected), while the veteran cast have little to no relevance to the overall plot whatsoever, with the exception of Yugo and Xion, but that is mainly due to their relationship with Nagi (Yugo was apparently an object with her at some point, and Xion is implied to be her brother).
Shipping Goggles: Thanks to Cronos affectionately stroking Uriko's face in her Extreme/PR ending (an act that causes an awkward reaction from both), quite a few people have misinterpreted the scene as something a bit more tender. In reality, he most likely mistook Uriko in her true form for that of his mother, tying into the aforementioned Uriko = Uranus = Cronos' mother theories.
Surprisingly Improved Sequel: The arcade version of Bloody Roar 1 (known as Beastorizer) was a fairly crude mash fest with poor controls, crap A.I. with a wannabe SNK Boss that can be defeated by blocking and punch spamming, with no balance whatsoever. Come Bloody Roar 2, which was a wonderfully elegant game, refining the engine of the first, making it easier to pick up and play, but making it nearly impossible to move spam, dramatically improving the A.I., and fixing the mechanics until you had a game that was simple to pick up yet had a surprising amount of depth, and would screw you over if you didn't learn the intricacies. It also helps that the Playstation port added a story mode that makes every character's individual story line connect with each other, comes with their own ending (almost all of which are canon), and even has the unlockable characters (Gado and Shenlong) with their own story modes.
Depending on how you view it, Bloody Roar 3 can be considered an Even Better Sequel due to being faster while still maintaining 60 FPS, featuring some semblance of a parry system, giving a couple of characters who borrowed many moves from previous characters their own movesets (such as Shenlong and Jenny playing far more differently from Long and Fox), and a bigger focus on 3D fighting* Previous games did give you the option to side step, but this one was more focused on it due to it being on by default and actively encouraging you to use it, especially since air-combos are easier to pull off. The downside is that story mode has been simplified and integrated into arcade mode (like almost every fighting game to date), and the story in general is lacking compared to the previous game.
Tear Jerker: In Xion's ending of Bloody Roar 4, he murders Ryoho in front of Mana. Keep in mind that Ryoho is her only parental figure at that point. Although she was able to help Xion and Nagi to overcome and destroy the Unborn spirit that possessed them, it doesn't help that she started howling in front of her dead foster father's corpse. Probably the only effective tear jerker in the whole game.
The Woobie: Stun used to be a top-notch scientist at Tylon, but was captured by his friend/rival, Busuzima when he learned about the evils of the organization. Busuzima then used Stun as a guinea pig in an attempt to create the first man-made Zoanthrope. The experiment "succeeded" and mutated Stun into a insect-man-beast that was unable to fully change back to human. The unstable nature of his form meant he was in constant agony. Stun vowed revenge on the company and the person who deformed him, but the pain proved too great for him to bear. He died bitter, miserable, and alone. Even when he apparently turned out to be alive, he's still searching for a way to get himself back to normal.
Ryoho arguably qualifies as well. Sure, he's a strong badass who can handle Zoanthropes in his human form alone (sometimes with help from Mana's beast form), but that doesn't change the fact that he has a dragon form that could decimate the world at any moment if the seal is weakened, which can happen if other characters manage to weaken him enough, or if Xion wills it to happen due to being possessed by the Unborn. What this basically means is that Ryoho is in harm's way at all times, and has to stay alive until his dragon form is subdued, or otherwise risk killing everything around him. This is also not helped that of all the endings, two result in him getting murdered in front of Mana!
They Changed It, Now It Sucks!: Bloody Roar 4 changed how the health system worked. Everyone would agree this was a dumb move. Fans are also not fond of the new characters, crap A.I., ease of button mashing (going from it being pretty much impossible in 2, to being a way to get an automatic combo in 4), the change to the series' image, and the inexplicable negation of a good deal of the Character Development the previous entries had.
They Wasted a Perfectly Good Character: Some secondary characters don't receive a whole lot of development, such as Namaniki and Momo, who could have easily been written out of the storyline. Not to mention the existence of the fish god was pretty much forgotten. Weird, considering it may have been interesting to see two gods conflict with each other.
They Wasted a Perfectly Good Plot: Elements of previous subplots (especially the first half) are not referenced in later chapters, such as the aforementioned fish god.