Nicholas "Nicky" Pike, sometimes called Nick-o, is Mallory Pike's 8 year old brother. He has 3 brothers and 4 sisters. He lives with his family in Stoneybrook, Connecticut, where he was born. His brothers are Jordan Pike, Adam Pike, and Byron Pike. His sisters are Mallory Pike, Vanessa Pike, Margo Pike, and Claire Pike.
Nicky wears glasses. Like the rest of the Pike family he has brown hair and blue eyes.
Nicky often wants to play with his brothers but they think he's babyish and often won't play with him.When Mallory wrote a play based on her family, she originally called Nicky "Ricky. Nicky objected and became known as "Ed" because he thought it was a cool name.
Nicky broke his finger in Book #14 Hello, Mallory and was revealed to have broken a bone when he fell out of a tree, as mentioned in Book #13 Good-bye Stacey, Good-bye. He hurt his finger by playing tennis.
He is a big ball of energy and a champion hider. He once made Dawn think there was a ghost in her house when he hid in the secret passage on the Schaffer property
In Karen's Lemonade Stand Nicky started to sell popcorn near Karen's lemonade stand before and after Krusher's games. He finally joined in on the game against the Bashers.
- To eat peanuts
- Collects old pennies
- Going into Dawns secret passage into her house
- Getting the Bizzer Sign.
- Nicky has had the chicken pox.