Duki Luki, full name Dukandria Lukandria, is the grimsona (grim persona) of Duke Luca Abele from Dishonored 2 (2016). He is regarded as the child of the server, and is also the adopted child of Grim Alex from the same game.
The idea of Duki Luki was first conceived around April 23rd, 2020, where user Potes says "au where duka luca accidentally doses himself and is the crown killer instead". User Ram pointed out the "Duka Luka" typo that was made, prompting user Hydria to send a video of "Duki Nuki", a Vinesauce Joel video. The two phrases were combined to create the name Duki Luki. Hydria proclaimed that Duki Luki would be the name of Duke Abele's "other half" of the discussed AU¹.
Later on in the same day, user Custy asked about Duki's physical appearance, to which Hydria responds with an image of Luca Abele's self portrait from the game².
Art by Hydria
The next day on April 24th, user Sarge sends this Roblox meme into the chat³.
After banter about Grim Alex being associated with such a meme, Potes suggests that the mom is Theodanis and the kid is Luca, while user Lunar just says "Duki Luki". Potes then claims that Duki's origin story is Grim Alex "yoinking" him away from his father. Later on, Potes established a clearer backstory as so:
grim alex took him as a child
he became duki luki
joined the oracular sisters somehow
went even more crazy
The Oracular Sisters arc was presented as an AU however, and is presumed to not be canon.
Mitosis sample from Lunar
A little later in the conversation both Lunar and Infinite typed "Duki Duki Literature Club" as a play on the visual novel "Doki Doki Literature Club". Hydria suggested to name the server "Duki Duki Literature Club" but only for "one (1) day". This ended up getting morphed into the Duki Luki Literature Club³.
On May 1st, Lunar started doing a procedure called mitosis on a modified version of the Duke's portrait. It was proposed by Custy to rename the server the "Duki Luki Mitosis Lab" and the name stuck⁴.
Potes created a Duki Luki bot and introduced him to the server on May 19th, 2020⁵. The bot has no clear purpose other than to respond "DUKI LUKI" whenever his name is mentioned. Since his initial creation, there's been numerous more commands for him, including but not limited to showing people his drawings, greeting new members, and shanking people.
Harold, also known as Harold Luki or Harold Lukadria, is a weed smoking gun owning rat. He is Duki's pet, having been adopted on the same day as his inception.
Harold was created on June 25th, 2020. In the server there is a rat grasp emoji, which during a conversation in #meme-factory was used alongside the "Emily the Green" emote (a hand holding joint) by Potes, claiming that "i'm giving him weed so he has a fighting chance" when someone threatened Harold. User Edge then combined the rat grasp emoji with a gun emoji, saying "I arm the rat w a gun." Potes then declared that as part of Duki lore, Harold (who at the moment was referred to as "weedgun rat") would be Duki's pet. When asked to name it, now deleted user by the alias of "CEO" responded with "Harold".
Depiction by Custy
Drawings by Duki
Duki Luki has a childish mind, speaking in simplistic sentences in all caps. His hobbies include eating crayons, tax evasion, and cannibalism. He is a big fan of meat, responding to any time meat is mentioned. He's not very bright, but he has a big heart for both his mother and members of the server.