Full name: Thomas Mayfield
Status: Alive
Born: 1947 [Five years younger than Joyce]
Zodiac Sign: Unknown
Age: 37 (Season Three), 38 (Season Four)
Titles: Tom (by Susan & Joyce), Dad (by Max), Daddy (by Jamie), Mr. Tommy (by Will & Lucas), T (by Jonathan, Steve, Nancy & Robin), Mazzy (by Eleven), Mayfield (by Steve, Neil & Billy)
Aliases: The Scientist, The Californian Scientist, Papa Mayfield
Residence: Mayfield House (formerly; lived in California with Susan, Max & Jamie), Mayfield Apartment (currently; lives in Hawkins)
Relationship status: Dating Joyce Byers
Family: Mr. Mayfield (father), Mrs. Mayfield (mother), Susan Hargrove (ex-wife), Max Mayfield (daughter), Jamie Mayfield (daughter) [Face claim: Summer Fontana]
Romances: Joyce Byers (girlfriend)
Other relations: Susan Hargrove (best friend/ex-wife/platonic soulmate/confidant), Jim Hopper (close friend), Joyce Byers (close friend/girlfriend/partner in crime/comfort person/safe place/confidant), Karen Wheeler (close friend), Sam Owens (ally), Max Mayfield (close friend/daughter/protectee), Jamie Mayfield (close friend/daughter/protectee), Dr. Brenner (enemy), Henry Creel/Vecna (enemy), Demodogs (enemy)
Affliction: Mayfield Family, Byers Family, Susan Hargrove (formerly), Joyce Byers (currently), Max Mayfield (currently), Jamie Mayfield (currently), Jonathan Byers (currently), Will Byers (currently), San Diego Police Department (formerly), Hawkins Memorial Hospital (currently), The Party (ally)
Occupation: Forensic Scientist at San Diego Police Department (formerly), Clinical Laboratory Scientist at Hawkins Memorial Hospital (currently), General Surgeon at Hawkins Memorial Hospital (currently)
Gender: Male
Sexuality: Bisexual
Height: 6'0 (Feet), 1.83 (Meters)
Eye color: Dark blue-gray
Hair color: Dark brown
Portrayed by: Chris Wood
Famous quote: "Complain? What is there to complain about, Joyce? Max finally dumped Sinclair. If anything, we should celebrate."
Book: 𝐌𝐘 𝐆𝐈𝐑𝐋 ━━ 𝐉𝐎𝐘𝐂𝐄 𝐁𝐘𝐄𝐑𝐒
Love trope(s): Friends To Lovers, Battle Couple, Soulmates, Right Person Wrong Time, Nice x Nice, Sunshine x Sunshine
