Judith in the Judith Bible story is a heroic and devout widow. She was a woman of great courage and faith. She played a crucial role in saving her people from the Assyrian threat.
There could be characters like Rick. He often has interactions with Michonne in the broader 'The Walking Dead' universe, and might also be present in the graphic novel to some extent. Another one could be Andrea, as she is also related to Michonne's story.
Yes, Michonne is present in the comics. Her character development and role are quite prominent. She faces various challenges and her actions have a big impact on the comic's plot.
I don't have enough information to determine exactly who Judith Kay is. She could be an ordinary woman who gets caught up in an extraordinary situation involving the mirror.