Thanks to @inseparabiles here are some thoughts about Web!Macrinus
Became an avatar of the web after he freed himself from his slavery, using the power to gather fighters and release them to the Colosseum in ancient Rome.
Over years he's been able to live on by sacrificing more and more fighters, stealing the very life from them.
He's moved all over Europe and northern Africa, learning any language he comes across with ease by immersing himself in the city life.
He takes great joy in controlling the choices of people to lead them into different fates, but ultimately it's the thrill of fighting that always draws him back. Underground fight clubs are typically where he is found.
By the 1800s he found himself running an infamous fighting ring in London's underground. Building a drug empire on the backside of it.
He seeks Jonah Magnus when some of the best fighters he'd seen had been taken to a strange new prison, which had collapsed and killed everyone inside, and then had an educational institution built on top of it.
It was very easy to identify the servant of the Eye.
Jonah and Macrinus became quick acquaintances, both trying to figure the other out so that they could use them.
Jonah wanted to steal Macrinus from the Web to serve him in his pursuit for the perfect ritual, while Macrinus was content to control Jonah to bring in more for his own interests.
As the Web likes the world just the way it is, Macrinus worked close beside Jonah to undermine a lot of his efforts, stealing potential archivists or sending away anyone bringing a statement. It was a game to him, and one that Jonah let happen.
The years progress but the game still goes on. Macrinus continued to mess with Jonah's plans every step of the way, while staying close as a dear "friend."
Until Gertrude came along and the plans began to change.
Macrinus didn't like the woman as she was hard to control and difficult to predict. And something about her and the way she was with Jonah was more interesting to watch. He liked the way she almost rebelled against him towards her end.
Macrinus keeps his mansion in Rome just as it was when he first acquired it, though it has been upgraded with the times and maintained by a very, very loyal staff.
He also owns many grape orchards across the continent, and one in the USA as well. Good wine became his passion as well as his one love. His brand is called "Sangue del Colosseo" Blood of the Colosseum. It's primarily red wines but started to make some whites into the end of the 20th century.
Jonah was always the first to test a new wine, a tradition they still uphold into the modern day, going so far as to make it a monthly taste testing of all sorts of wines, not just Macrinus's own.
The one thing Macrinus loves is to drive people to fight. He pulls out their secrets, their insecurities, their shame, and uses it like a leash to keep control over them.