Lanny is a rookie on Prep & Landing. He has recently completed his training and graduated at the top of his class at Kringle Academy, achieving record marks in Holiday History and Christmas Cheer.
During his education there, Lanny was also the falsetto member of the Caroling Club, head of the Yuletide Yearbook Committee, and chief statistician for the Curling Team.
Lanny spent many years as a Snow Globe checker on the factory line, all the while dreaming of the day he would be accepted into Kringle Academy. Lanny’s poster of his Prep & Landing hero Wayne and routine visits to the Hall of Holiday Heroes kept Lanny motivated to achieve his goal.
Lanny comes from a large family who provide constant encouragement, particularly his mother. She sends Lanny weekly care packages of fruitcakes, candy canes, and vegetarian beef jerky.
Likes: Lanny loves the apricot fruitcake at the Fruitcake Factory. He often joins his Kringle Academy friends Wendy and Vicky for the popular “Fruitcake Factory Friday Food Fests”.
Dislikes: Lanny has few dislikes, although he is occasionally defensive when his cranky grandpa often comments that he is "ganglier than a newborn reindeer".
Lanny is introduced as one of the top secret Christmas elves whose mission is to enter houses without getting noticed, being described as an elf agent part of Prep & Landing, an elite unit of elves traveling to various houses worldwide ready for Santa's arrival. The following year on Christmas Eve, Lanny encounters Wayne at Magee's office telling Magee to open the door for him. He enters her office and introduces himself to Wayne. Magee then takes him and Wayne to Thrasher, the last available transport reindeer to deploy the elves to the spot where Santa would arrive at which is at Timmy's house. Upon arriving, Lanny decides to go upstairs while Wayne decides to relax and do a cookie break. Lanny then examines to know if everything is perfect at Timmy's house before Timmy wakes up. When it comes to Lanny asking Wayne for help, Wayne refuses to.
Lanny then arrives at the area where Timmy looks as Wayne, putting him to sleep. He and Wayne then plan on putting Timmy back to bed, telling Wayne to imagine of how Timmy would feel during Christmas Day. Just as Magee cancels Santa's route, Wayne feels sad that he never meant for this cancellation to happen. To stop this cancellation, Wayne calls Santa to help him do his job just as he and Lanny work together to bring Santa get to Timmy's house. After a failed attempt to help Santa arrive because the snowstorm blew away the ropes, Lanny and Wayne gather an inflatable snow globe and some Christmas lights to help Santa just as he and Wayne light the signal for Santa. The two manage to help Santa's sleigh land on the rooftop of Timmy's house so Santa could deliver the gifts to Timmy.
Back at NPCECCC, Lanny arrives at Wayne telling him that the elves will start the gift exchange just as Wayne arrives at Santa's room to apologize the mistake he did. After his talk with Santa was successful, Wayne explains to Lanny that he offered him a promotion as Director of the Nice List just as he shows him the snow globe of Timmy's best Christmas. At the end, Lanny receives a fruitcake from Magee, happy that this is the best Christmas ever for him and Wayne.
Lanny, alongside his partner Wayne, returns in this special where Magee takes them to a "Silent Night" operation. As the two arrive at Mrs. Claus's sleigh, Mrs. Claus offers the elves hot chocolate as well as an important mission where Lanny and Wayne must find a wooden box at Santa's office. As the elves begin their mission, she tells them not to make her sad. Lanny, however, tells Wayne that this is a bad idea as he and Wayne might be on Santa's Naughty List just as the two arrive there. Just as Santa wakes up, he scolds the elves for sneaking into his office he puts the two on the Naughty List, causing the elves to receive coal for Christmas. Back at the office again, Mrs, Claus tells Lanny and Wayne about the miniature Christmas tree on the bookshelf. The two manage to unlock a switch leading down to Santa's Secret Workshop to which as Lanny and Wayne arrive there, the two find the wooden box that Mrs. Claus requested in order to complete their mission. Upon grabbing it, the two manage to escape before Santa wakes up. Back with Mrs. Claus, she receives the wooden wheel piece to her husband, which is a wooden duck (the first toy that Santa has ever made). Santa then thanks his wife for finding the missing piece just as the NPCECCC elves gaze in awe.
In Sorcerers of the Magic Kingdom, he and Wayne have their own spell card called "Wayne & Lanny's Ornament Barrage". This card was only available to guests that attended Mickey's Very Merry Christmas Party in the fall of 2012.