Hatake Kakashi
Defeat him in Heroes Mode.

Guy
Defeat him in Heroes Mode.

Gaara
Complete the Survival Exercise in Heroes Mode, and complete Leaf Destruction in Normal Mode.

Itachi Uchiha
Defeat him in Heroes Mode.

Jiraiya
Defeat him in Heroes Mode.

Tsunade
Defeat him in Heroes Mode.

Kisame Hoshigaki
Defeat him in Heroes Mode.