- real name Rachel, a DD that absolutely adores music, her playing the drums being one of the biggest joys in her life

- generally modest personality, very giddy when someone asks her about her hobbies, but there are times where she gets a bit too full of herself, seeing herself as a star that hasn't found her audience yet

- she’s also a traitor that abandoned her teammates to do her own thing, but that might've saved her in the long run since she didn't become Sentinel food unlike the others

- no one knows when she arrived in Takamagahara, but basically everyone, from Inoshima all the way to Kisaragi would very much appreciate if she left, not just because of her loud music, but also because of the bad weather she creates

- since her powers are electricity based, whenever she gets in the heat of her performances, she can generate a LOT of residual energy, so much that she basically becomes a walking EMP field, and once she reaches the climax, all that energy is released in a singular shockwave that basically fries anything it touches; if she’s high in the air while gathering electricity, she can instead start the formation of a lighting storm

- it’s this problem that makes her very conflicted, she wants to be a popular musician, but she also wants an audience that doesn’t short circuit or barricade themselves in their homes before she finishes; so she’s had to tone down many of her performances, meaning that the only times she really puts all her digital heart and soul in is when a thunderstorm is about to hit a town

- on the plus side, she has become a legend of sorts in numerous towns across Takamagahara, even gaining the nickname “Raichil”, a pun between the first number of her serial name, her real name and the god of thunder Raijin, her concerts being a sign many take that a stormy day is approaching, so she has at least gained some fame, even though it's not exactly the one she wanted; there is another variant to her nickname, however, and that’s “Raiyon”, which is considered bad luck if you say it out loud and that you’ll be cursing your town with bad weather for a day

- while she is a pretty skilled fighter, having a preference for her twin railgun and pile driver tonfas, it’s her mini bots she’s nicknamed “Bees” that actually do a lot of the heavy work

- originally security bots she stumbled upon in an abandoned factory and that grew a liking for her after she freed them, she has “upgraded” since, giving them a new coat of paint (they were originally red and silver) and adding stingers to their arsenal that are actually her tail tip she repeatedly cut off to fit all of them with one

- they possess sharp claws that can extend into longer plasma ones, a mini turret on their underside and can arrange themselves into a shield formation to allow them to protect 84 while she wails on the opponent with her own arsenal

- since they posses stingers derived from her's, 84 sorta has a possessive attitude towards them, seeing how they all effectively now have a part of herself in them, and the Bees reciprocate this feeling, showing adoration towards her as their “queen” (a Queen Bee, so to speak); she also scolds them whenever they get damaged like a concerned mother since they don't possess her regenerative properties, meaning that she has to repair them herself

- she also has to manually refuel their stingers with acid and make sure they don't make direct contact with it

- unlike a regular DD’s stinger, they actually have 2 viles, one for the acid, and one they use to store oil in, draining it from WDs like mosquitoes and deliver it to their queen, so she rarely ever needs to go on hunts herself when she can just send them to drain some hopeless drone dry