Season 4, Code Lyoko Wiki

The fourth season of Code Lyoko originally aired from May 18, 2007 to November 17, 2007. It mainly focused on the group traveling the Internet in search of X.A.N.A., in their virtual submarine: the Skidbladnir. Using their ship, they go searching for Replikas to destroy them to prevent X.A.N.A. from succeeding in world domination. They also try to rescue a X.A.N.A.-fied William and bring him back home. After the Core of Lyoko is destroyed, the group searches for a way to rebuild Lyoko once more

William Dunbar, Wiki

Odd Della Robbia, Code Lyoko Wiki

Code Lyoko: Evolution - Wikipedia

Code Lyoko Quest For Infinity, season 4 De Code Lyoko, yumi

Lyoko Warriors, Code Lyoko Wiki

Awesome Code Wiki: Odd Della Robbia

Code Lyoko (partially found production material of French animated

Odd Della Robbia (Code Lyoko)

Code Lyoko, Wiki

Sissi Delmas - Sissy Delmas (Code Lyoko) Photo (43145735) - Fanpop