Age 20

Peter met Teal in Ilex Forest. Later, the two Celebi met Kowalski and the shadow Pidgey Degnon. Degnon didn't feel ready to be Purified, so Peter instructed him and Kowalski to go to Lyra Forest to be safe while Degnon prepared himself.

Later, Peter appeared to help purify Sirius. The attempt nearly failed, but ended up successful. In the process, he learned that Sirius was the pokemon who destroyed Cipher's main lab about ten years before. He also met Lavender and Imperius.