You're lucky - my antagonist finally showed up in the comic, so I can post about him now!
Meet Lord Kobayashi, a very skinny and very tired-looking man in clothes that have definitely seen better days!
His goals and purpose are pretty mysterious so far, but he and his tiny righthand woman Wen are responsible for sending out the latest round of inept thugs after my protagonist, Masahiro. He claims those thugs were sent out to recover something of his that was taken from him, but what that is - and why it's missing - is not yet clear.
Also, this is Wen:
She packs a lot of anger into a very tiny body, so it's pretty explosive.