eerr. Sonicfan! You did didnt you?
Lol, yeah, that's me
You can't change the name of the console, since it is indeed the console talking. However, you can use an alternative, though it requires a bit more typing.
messageall('',"<color:ffff00>Dillpickle<color:ffffff>: Hi guys, it's me, Dill!");
It will look exactly like a normal chat does to others.
Also, you can use spaces when using talk(); just so you know.
talk("Hi guys, it's me, Dill!");