King K. Rool is the rival of the Kong family who made his first Mario Baseball appearance in Mario Super Sluggers. King K. Rool is on DK's team (despite the fact he hates them, but joins them because of their skills). K. Rool has high batting, pitching, but has low fielding and slow running.
- Kritters (all colors)
- King Boo
- Mii (Green)
- Kongs (all members, despite being on their team)