She was a legendary Jedi Master during the final years of the Galactic Republic, maintaining a seat on the Jedi High Council during the Naboo Crisis. Notably, Yaddle was a member of the same enigmatic species as Grand Master Yoda.
Yaddle was present on the Jedi Council when Master Qui-Gon Jinn claimed he found a boy named Anakin Skywalker who believed to be the destined Chosen One. Yaddle and the Council tested the boy and found that he was incredibly gifted in the ways of the Force but close to the dark side. Post Battle Of Naboo she was less active in Jedi affairs leaving the council shortly before the clone wars.