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RWBY: Grimm Eclipse

    Mutated Grimm 

Mutated Grimm

A subset of Grimm featured in the video game RWBY: Grimm Eclipse. They are more powerful than the standard versions, but where are they coming from, and who or what is behind their appearance?

  • Action Bomb: Mutated Creeps have the ability to explode violently to deal damage. They will also do it when killed.
  • Attack Its Weak Point: The Mutated Deathstalker is only vulnerable to Team RWBY's weapons on its stinger.
  • Elite Mooks: They are much more powerful than standard Grimm. A normal Mutated Beowolf is even stronger than an Alpha Beowolf.
  • Phlebotinum Muncher: They are attracted to a mysterious blue substance, which is also implied to be part of the serum that creates them.
  • Playing with Syringes: They were created by injecting Grimm with a serum.
  • Sickly Green Glow: The main difference between regular Grimm and them is the addition of glowing green spikes across their bodies.

    Dr. Merlot 

Dr. Merlot
"Welcome to the testing grounds, students. Why don't you get acquainted with my test subjects? They could use the exercise."
Voiced by: Dave Fennoy

"Oh, where are my manners? Allow me to introduce myself. My name's Dr. Merlot. You don't know me, but I most certainly know who you are. Nevertheless, I'm thrilled you're here. You might be exactly what I need for a very important... experiment."

The main villain of the video game RWBY: Grimm Eclipse. A scientist and former student of Ozpin's who is fascinated by the Grimm, seeing them as a perfect life form and desiring to further increase their power.

  • Admiring the Abomination: He believes that while the Grimm are individually flawed and damaged, as a species they are beautiful and full of potential.
  • A Pupil of Mine, Until He Turned to Evil: He once studied at Beacon under Ozpin, but even then the teachers thought something was very wrong with him. Ozpin in particular saw his studying of Grimm as a futile if not blasphemous practice, causing Merlot to reject Ozpin and Beacon, and continue his studies on his own.
  • The Beastmaster: He has direct control over the Grimm, to the point where they even act as a security force to protect his labs.
  • Been There, Shaped History: The game all but states that the reason Mountain Glenn was overrun and destroyed by Grimm was this man's experiments. At the very least, he made the situation far worse than it could have been.
  • Cybernetics Eat Your Soul: Has a very obvious cybernetic eye, along with what appears to be a cybernetic right hand. Whether or not he got these before he became evil is unknown, however.
  • Evilutionary Biologist: He believes the Grimm are a more perfect lifeform than humanity, and wishes to see just how powerful they can become with his help.
  • A God Am I: As his Sanity Slippage furthered, he went from a scientist desiring to make use out of the Grimm for humanity, to a man seeing himself as the god of the Grimm.
  • Gratuitous Latin: The title of his Villain Song "Lusus Naturae" is, roughly, Latin for "freaks of nature". Merlot however uses it as a term of endearment, seeing the Grimm that he studies as untapped potential that he wants to make use of.
  • Mad Scientist: His ultimate goal is to fulfil the Grimm's potential by using science to improve them where nature failed, a goal that got him labeled as a madman. The various mutant Grimm that appear in the game prove that, whatever else, he isn't wrong about their capacity for improvement.
  • Mecha-Mooks: He uses heavily-armed combat robots as his main security. They consist of a mixture of red warrior machines with a double-bladed staff, and white gun-toting droids that can alternate between grenade launchers and rapid-fire energy cannons.
  • Never Found the Body: He was presumed dead after the fall of Mountain Glenn. Again at the end of the game, when his laboratory is destroyed but his fate is ultimately unknown.
  • Never My Fault: Dr. Merlot asks if Ozpin would believe him if he said the fall of Mountain Glenn wasn't his fault. However, the only thing Ozpin is willing to believe is that Merlot never takes responsibility for his actions.
  • Oh, Crap!: Starts to lose his cool when Team RWBY begins hacking into his computers with Ozpin's help due to a security oversight.
    Dr. Merlot: Did you just... oh no... how could I be so stupid?!
  • Sanity Slippage: Dr. Merlot was initially a Well-Intentioned Extremist desiring to turn the Grimm from forces against humanity into forces for humanity. Sadly, due to many writing him off as insane and being condemned by Ozpin, he slowly began to become as insane as they said he was, focused solely on continuing his research.
  • Smug Snake: He initially comes off as very secure in his power and is dismissive of Team RWBY's attempts to foil his plans. This self-assurance gradually breaks down as nothing he throws at RWBY manages to stop them.
  • Taking You with Me: Upon the destruction of his prize specimen, a Mutated Deathstalker, he decides to just blow up the whole facility. Fortunately, Team RWBY escapes.
    Dr. Merlot: No! Nooooo! My one of a kind specimen! This is inconceivable!
    Professor Ozpin: It's all over, Merlot. You've got nothing left.
    Dr. Merlot: There is something I can do. Let's end this with a bang.
  • Villain Song: "Lusus Naturae", played in the credits of Grimm Eclipse. The song talks about how much Dr. Merlot admires the Grimm and what potential they might have if he uplifts them through his science. He wants to be seen as more than just a madman and boasts about how his master plan is to create the perfect beast and give it a useful existence.
  • Villainous Breakdown: Once Team RWBY starts doing some actual damage to his labs and his experiments, he starts losing his cool and demanding to know why they aren't dead yet.



    Possession-type Grimm 

Possession-type Grimm

In the manga, these are a number of small Grimm fused together capable of possessing inanimate objects. They are the only know type of Grimm created by humans, and one such creation was used to make the Knight that fights Weiss in the White Trailer. In the Volume 4 Director's Commentary, it was confirmed that it is a Geist variant possessing the armor, and named 'Arma Gigas' in this state.

  • Demonic Possession: Its only real capability is possessing inanimate objects.
  • Fusion Dance: It was created by the Schnee Dust Company by forcibly combining multiple Grimm.
  • The Worm That Walks: It's a single entity formed by fusing multiple smaller Grimm together.

     Cephalopod Grimm 

Cephalopod Grimm

A Grimm that looks like a giant skull with multiple tentacles sprouting from it. It first appears in Chapter 10 in the manga when Roman is investigating Mountain Glenn.

  • Attack Its Weak Point: Much like the Geist's mask, its body is the weak point of the gestalt Grimm it creates. Attacking the 'core' at the center of the merged Taijitus is how teams RWBY and JNPR manage to weaken and defeat the monster.
  • Combat Tentacles: Its main form of attack is to use its myriad of tentacles.
  • Dem Bones: Its main body looks like a giant horned skull.
  • Demonic Possession: According to Weiss, it's a possession-type Grimm similar to the one possessing the Knight armor she fought in the trailer (later revealed by Word of God to be a Geist variant), in which case it does this to other Grimm as opposed to inanimate objects.
  • Extra Eyes: It has six eyes peeking from the "skull" it has.
  • Fusion Dance: It is capable of forcing itself and four King Taijitu to combine into one giant hydra-like Grimm.


Example of: