A transition period makes sense. But this happens so fast. Makes me wonder what incredibly life-changing, life-defining event occurred that gave Darth Maul his name. How did Darth Maul get his name, anyway? Is it explained away in the Exhausted Universe?
from wiki:
"After a month's time, his master returned and challenged him to a duel, which, already weakened, Maul quickly lost. Sidious then told Maul that he had failed and is soon to be replaced. Overwhelmed by hatred, Maul nearly defeated his master. When Maul's emotions were finally spent, he prepared to die, only having been met by Sidious' satisfaction.
By wanting to kill his own master, Maul had in fact passed the final test. His master proclaimed him Darth Maul, Dark Lord of the Sith, and took him to a new home on Coruscant."
No birth name has been given.