Bluey the Walrus
Players can challenge him after they win all challenges in Snowflake Mountain. Players race Bluey in Hovercraft in his course, where it is a downhill mountain with rolling snowballs as obstacles. If Bluey is beaten in a race, he is temporarily be freed of Wizpig's brainwashing and allows the players to partake in Snowflake Mountain's Silver Coin challenges or Balloon Touch Challenge in the DS remake.
If all of Snowflake Mountains Silver Coin or Balloon Touch Challenges are beaten, players can re-race Bluey, where he is faster, making his challenge more difficult. After Bluey is beaten for the second time, he is relinquished from Wizpig's control and gives players a piece of Wizpig Amulet. Bluey also appears in Diddy Kong Racing's end-of-game victory celebration.
In Diddy Kong Racing DS, he sounds more elderly and is much faster in both races.