Rion was first mentioned in canon in the StarWars.com trivia gallery for the Star Wars Rebels episode "Out of Darkness." It first appeared in "Swoop Racers," a comic written by Cavan Scott, illustrated by Derek Charm, and published in Star Wars Adventures (2017) 21 on May 8, 2019.
In the Star Wars Legends continuity, Rion was first created for the 1980 newspaper comic strip The Second Kessel Run, written by Archie Goodwin and penciled by Russ Manning.
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