/nick skript with a gui, a custom one that is like maybe a sign named like "&bCustom nick" that closes the gui and sends the person to do like send in chat the name you want to be nicked, im not good at explaining. And also a random nick that gives the player a random nick. And like a item that when you click it it opens a new gui with dyes and when you click one of them it changes there name to like bold and a color or italic and bold and a color if you understand what i just said ur literally a legend.