Alanna (Japanese: アキナ Akina) is the character of the day in A Poké-BLOCK Party.
Alanna met Ash and his friends outside of the Trick House. Like them, she wanted to enter the Trick House contest in order to win the one-year supply of Pokéblocks. She was accompanied by her Whismur. Alanna seemed to be a fan of The King of Tricks. While May thought he was crazy, Alanna believed he was eccentric.
During the maze portion of the Trick House, Alanna got separated from her Whismur. Team Rocket wasted no time and used this opportunity to steal Whismur and give it to the boss. Unfortunately, they couldn't find their way out of the maze.
The protagonists soon got out of the maze at the same time as Team Rocket. Alanna saw that they had her Whismur, but because Team Rocket were wearing disguises, she thought that they had rescued it.
Alanna stuck with Ash and the gang through the rest of the Trick House. However, they kept getting sabotaged by Team Rocket. The trio eventually attempted to steal Whismur and Ash's Pikachu again. This time, Ash and Alanna battled them and sent Team Rocket blasting off. Unfortunately, none of them reached the end of the Trick House first, as a boy named Ivan was the winner.
Alanna's Whismur developed a friendship with the recurring Jigglypuff as, due to its Ability, it was the only one who did not fall asleep during its song. By the end of the episode, Whismur was tired from all the battling and went to sleep. Jigglypuff believed that it fell asleep because of its song and got mad at it.