- "I had a childhood nemesis. Lexi La Roche. She used to put gum in my hair."
- —Caitlin Snow on her high school nemesis[src]
Lexi LaRoche was a classmate of Caitlin Snow who bullied her.
- Bubble gum: Lexi used to chew bubble gum in high school and then use it to bully Caitlin Snow.
- "The Flash Is Born" (mentioned)
- While there are no known characters named Lexi LaRoche in the DC comics, a character with an identical surname, Carter Sinclair LaRoche, was a recurring villain in DC comics-based Swamp Thing TV series appearing two times in 1992.
- The character might be named after director Lexi Alexander or writer/director Alexandra La Roche.