Here are all easter egg names I know:

If you type name with "cc" letters in it there are some mgs type shi anime reference (I honestly was thinking this was racist joke or smth, lmao) 

If you type "Shanice" in her name she will be angry and if you ask her to name YOU Shanice she will ask why and fucking disintegrate out of existence

If you name her sis or your will be bro or smth she will ask if you have any sibling or call you weird

And Jun - 4 wall break, reminds me of that scp game