Baylis Archan was a Human male Padawan from the Legends timeline. As an apprentice to Jedi Knight Sha Koon, he dedicated his service to both the Jedi Order and the Galactic Republic.
Originally from Corellia, Baylis Archan, a Human, was identified as being Force-sensitive at a young age and subsequently brought to the Jedi Temple on Coruscant while still an infant. Archan entered the Temple academy, where, as an Initiate, he was encouraged to hone his naturally enhanced telepathic abilities during his training. After graduating from the academy, the Kel Dor Jedi Knight Sha Koon selected Archan to be her Padawan.
As the Clone Wars erupted between the Republic and the Confederacy of Independent Systems, Archan and his Master assumed the rank of Commander and led the clone troopers of the Grand Army of the Republic in battles against the Confederacy of Independent Systems. During the ongoing battle on the planet Giju, where they were deployed to take command, Archan and his fellow soldiers died in the conflict, leaving Koon to successfully conclude the battle. As he passed, Koon held him and sensed his death through the Force. Due to their strong connection, she later experienced a similar pain upon the death of her uncle, the esteemed High Council member Plo Koon, during the initial stages of the Great Jedi Purge.