From Software games have filters for player names and it often leads to stuff like this. Thus if you put "knight" in your character's name, a common thing that people do given that they're medieval fantasy games, it appears as "k***ht." Likewise "dead" becomes "d***" and "Thomas" becomes "T**mas." Even more embarrassingly, the filter is case sensitive and all the filtered words are lowercase, so you could name your character a slur and it would be fine as long as you capitalize the first letter.