[Yondaime]

Just wondering

Spoiler:

what happened to Joker exactly in the end? I know Junior like imparted knowledge or something to him and it made his hair turn white and his pupils dialate, then it shows him zoned out in a chair being waited on by Wendy and then he sees a dog and his pupils return to normal and he leaves somewhere and Wendy finds him gone, smiles, throws her apron down, and I assume goes after him. So what happened to him exactly in the end? He was like the only person who I didnt know what happened to in the end so any info would be appreciated

Thanks!

- Yondaime