mjf314:
You can use Google to search for character names on MDL. Just type the name of the character followed by site:mydramalist.com
It seems that this separate page for characters already available, but it can only be accessed through search engines and not directly through MDL. I recently searched for the fictional character Jung Da Jeong from 18 Again (2020) using a search engine and discovered that this character has a dedicated page on MDL. Moreover, you can update the entire information about this fictional character using the "Edit This Page" option.
It seems like this feature has gone unnoticed. All that's needed is to integrate it into MDL's search algorithm. Alongside the existing options for "People," "Articles," "Dramas," "Movies," "Specials," and "TV Shows," there should also be an option for "Characters."
https://prnt.sc/LA694k3l340l
When searched through MDL's search, there is no direct or exact indication of the character, but you can find the drama where the character is mentioned. For example, the drama appears as the third result in the list. So, while it isn't an exact search, it does provide some related results.
https://prnt.sc/mkF88W1iCnmC
edit : i also notice that not every fiction character has separate page