1Candace, suffering from schizophrenia, dies. Then Linda reads her diary and asks Walt Disney to create a program in memory of her.
2Phineas got bullied a lot in school and killed, so Candace, unable to handle his death, built an imaginary world where he still exists.
3Phineas and Ferb are a figment of Candace's imagination.
4Ferb has crippling mental issues.
5Dr. Doofenshmirtz is Candace's psychologist.
6Doofenshmirtz is Phineas from the future.
7Pinhead Pierre is Phineas's father.
8Doofenshmirtz is Phineas's father
9Candace is the true villain.
10Perry the Platypus and Agent P are two different entities.
12Perry the Platypus is Candace and Phineas's father
13Darth Vader is Phineas and Candace's father
14Norm the Robot is Phineas's father
15Doofenshmirtz works for O.W.C.A.
16Candace created Phineas and Ferb
17Linda was married to Doofenshmirtz
18Charlene Doofenshmirtz is Phineas and Candace's mother and lives a double life
19Charlene Doofenshmirtz is Ferb's mother
20Ferb isn't English but French
21Phineas is Vanessa's brother
22Thaddeus, Thor, and Mandy are the cousins of the Flynn-Fletchers
24Heinz Doofenshmirtz is Ferb's mother
25Ferb is part or fully alien
26Phineas's father is Bill Cipher
27Candace was abused by her birth father
28Phineas and Candace's dad is Roger Doofenshmirtz
29Ferb is responsible for Phineas's dad's death
30Phineas's father is Marty the Rabbit Boy
31Phineas and Ferb built Epcot
32Phineas and Ferb are reincarnations of Doofenshmirtz and Perry the Platypus
33Phineas is secretly a nightmare fetishist
