==In the manga==
===In the Pocket Monsters manga===
Sonia appeared in [[JNM13]]
[[File:Sonia Adventures.png|150px|thumb|Sonia in Pokémon Adventures]]▼
▲[[File:Sonia Adventures.png|150px|thumb|Sonia in Pokémon Adventures]]
===In the Pokémon Adventures manga===
Sonia debuted in [[PASS06]]. She encountered her grandmother [[Professor Magnolia]] and her assistants [[Sōdo Tsurugi|Sōdo]], [[Shirudomiria Tate|Shirudomiria]], and [[Marvin]] at the [[Motostoke|Budew Drop Inn]]. Sonia explained the inn's statue and its connection to the [[Darkest Day]]. When Magnolia's trailer car broke down, she lamented not being able to research the geoglyph at [[Turffield]] and asked Sonia and her assistants to go in her place. After arriving in Turffield, Sonia investigated the geoglyph while Sōdo and Shirudomira challenged the [[Turffield Stadium|Gym]]. Once Sōdo's match ended, he and Marvin met with Sonia, who concluded the geoglyph was a drawing of the Darkest Day.