These are the people that make up the Breeniverse.
These people have appeared on screen as video bloggers giving a major contribution to the plot.
- Bree - Jessica Lee Rose
- Daniel - Yousef Abu-Taleb
- Gemma (deceased?) - Jackie Jandrell
- Jonas - Jackson Davis
These characters have their own blogs that crossover between the official story.
There have been a handful of characters that have been seen in the videos, but do not post their own blogs, nor do they have speaking parts in general.
- Bree's father (deceased) - Greg Goodfried
- Bree's mother - Allison Probert
- Lucy - Jessi Williams and Amanda Goodfried
- The Cowboy - Unknown
- Deacon (individual) - Kenneth Goodfried
- Watcher - Unknown
- Jonas's aunt
The stuffed characters
Bree has several stuffed animals that she considers to be her friends.
- Purple Monkey - Herself (Himself?)
- Owen - Himself (turtle)
- Thor - Himself (bear)
- The Other Monkey - Himself (Herself?)
- Daniel's puppy - Himself (Herself)
A number of characters have been mentioned in the videos, but never seen onscreen. Due to the mysterious nature of the story, some of these people may not actually exist.
- Cassie - former friend of Bree
- Paul - friend of Daniel
- Andrea - friend of Daniel
- The Deacons - authority figures in Bree's religion
- Gemma's flatmate - bit of a slob, and alleged biscuit thief, likely Gemma fabrication
- Franklin - described as "great-uncle" of Bree; likely her granduncle meaning a sibling of one of her dad's parents
- Bree's biological father - Bree's birth dad.
- Bree's biological mother - Bree's birth mom.
Ambiguous Mystery People
Initially created to run the forum and website, this person was never really a "character" in the series, but merely a fan played by LG15 staff member.
- Bukanator - Various (Admin of the Tribute to Lonelygirl15 fansite)