Percy Jackson/Harry Potter Crossover: Thicker Than Water
So I came up with an idea for a PJO/HP Xover where Percy and Harry are half-brothers through Lily and Sally, who are the same person. I read a lot of these, and everytime it's just Lily runs off and becomes Sally Jackson through legal name changes, hair dye/hair-coloring spell, and contacts/eye-changing spell. And Harry is always the older brother for obvious reasons (his story does come first being as it takes place in the 90's while Percy's story takes place in current years). I decided to make it that Percy is the older brother, and Lily lives because Poseidon makes a deal with Hades. Hades brings her back to life, but under certain conditions: she must now live as a different person, Sally Jackson, a brunette with ocean blue eyes; her life-force is now the sea so she needs to visit it often to regain energy or she will slowly die; her magic is taken away; Poseidon cannot tell her that Harry is alive, though that's more of the Fates' condition so that Harry's fate isn't altered. Poseidon takes her to Manhattan to live there since she and Percy could be closer to Olympus, and they don't find out about Harry until Sally finally decides to connect with the Wizarding World through reading the Daily Prophet and find out Harry is alive and was in the TriWizard Tournament.
Time and Ages (Poseidon's age is for fun...)
1974: James Potter is born: January 30
1974: Lillian “Lily” Evans is born: March 27
1981: Lily (11) and James (11) get their letters
1981: Lily (11) and James (11) attend their first year at Hogwarts, School of Witchcraft and Wizardry
1991: Lily (16-17) and James (16-17) start dating
1991: Lily (17) and James (17) graduate from Hogwarts
1992: Lily (18) and James (18) break up
1993: Lily (19) meets Poseidon (2,000+)
1994: Lily (20) gives birth to Perseus “Percy” Dylan Evans: August 18
1994: Percy is born a powerful demigod, the Fates make Hecate take his wizard powers so he isn’t too powerful
1995: Lily (21) and James (21) get back together
1996: Lily (21) marries James Potter (21)
1997: Lily (23) gives birth to Heracles “Harry” James Potter: July 31
1998: Voldemort attacks the Potter household; Lily (24) and James (24) die; Percy (4) was hidden: October 31
1998: Voldemort attempts to kill Harry (1), doesn’t succeed; Percy (4) watches as his parents die
1998: Poseidon (2,000+) hides Percy (4)
1998: Percy watches from his hiding place as his parents are declared dead and his brother is taken away
1998: Poseidon (2,000+) revives Lily (24) and preforms a burning of the shroud for James (24)
1998: Lillian Evans (24) is revived as Sally Jackson (24), a brunette with sea blue eyes, for protection
1998: Lily’s (24) new form, Sally (24), must annually revisit the sea as it is now her life force
1998: Percy Evans-Potter (4) has his named changed to Percy Jackson
1998: Harry (1) is sent to live with the Dursleys after it is declared his family has died
2000: Sally (24) marries Gabriel Ugliano (27)
2007: Percy (12) LT
2008: Percy (13) SoM
2008-2009: Harry (10-11) SS/PS
2008: Percy (14) TC
2009: Percy (14-15) BotL
2009-2010: Harry (11-12) CoS
2009-2010: Sally (35-36) marries Paul Blofis (35-36)
2010: Percy (15-16), LO, fights in the Titan War
2010-2011: Harry (12-13) PoA
2010: Percy (16) is taken by Hera
2010: Jason Grace (15), Piper McLean (15), and Leo Valdez (15) LH
2011: Percy (16), Frank Zhang (16), and Hazel Levesque (13) SoN
2011: The Seven; Percy (16), Annabeth Chase (16), Frank (16), Jason (15-16), Piper (15), Leo (15), Hazel (13) MoA
2011: The Seven and Nico DiAngelo (14), HoH
2011: Percy (16-17) and the gang fight in the Giant War, and win
2012: Sally (38) gives birth to Andromeda “Andy” Lillian Blofis: August 9
2011-2012: Harry (14) GoF
2012: Sally (38) and Percy (17) find out Harry (14) is still alive and well by way of the TriWizard Tournament
2012: Percy (18) and friends are issued a years-long quest to help in the war against Voldemort
2012-2013: Percy (18) and friends join Percy’s long lost brother at Hogwarts
2012-2013: Harry (15) OotP, but now with his older brother
2013-2014: Percy (19) and Harry (16) HBP, return to Hogwarts with friends
2014: Harry (17) DH
2014: Percy (20) and friends help Harry (17) and the wizards in the war against Voldemort
1974: James Potter is born: January 30
1974: Lillian “Lily” Evans is born: March 27
1981: Lily (11) and James (11) get their letters
1981: Lily (11) and James (11) attend their first year at Hogwarts, School of Witchcraft and Wizardry
1991: Lily (16-17) and James (16-17) start dating
1991: Lily (17) and James (17) graduate from Hogwarts
1992: Lily (18) and James (18) break up
1993: Lily (19) meets Poseidon (2,000+)
1994: Lily (20) gives birth to Perseus “Percy” Dylan Evans: August 18
1994: Percy is born a powerful demigod, the Fates make Hecate take his wizard powers so he isn’t too powerful
1995: Lily (21) and James (21) get back together
1996: Lily (21) marries James Potter (21)
1997: Lily (23) gives birth to Heracles “Harry” James Potter: July 31
1998: Voldemort attacks the Potter household; Lily (24) and James (24) die; Percy (4) was hidden: October 31
1998: Voldemort attempts to kill Harry (1), doesn’t succeed; Percy (4) watches as his parents die
1998: Poseidon (2,000+) hides Percy (4)
1998: Percy watches from his hiding place as his parents are declared dead and his brother is taken away
1998: Poseidon (2,000+) revives Lily (24) and preforms a burning of the shroud for James (24)
1998: Lillian Evans (24) is revived as Sally Jackson (24), a brunette with sea blue eyes, for protection
1998: Lily’s (24) new form, Sally (24), must annually revisit the sea as it is now her life force
1998: Percy Evans-Potter (4) has his named changed to Percy Jackson
1998: Harry (1) is sent to live with the Dursleys after it is declared his family has died
2000: Sally (24) marries Gabriel Ugliano (27)
2007: Percy (12) LT
2008: Percy (13) SoM
2008-2009: Harry (10-11) SS/PS
2008: Percy (14) TC
2009: Percy (14-15) BotL
2009-2010: Harry (11-12) CoS
2009-2010: Sally (35-36) marries Paul Blofis (35-36)
2010: Percy (15-16), LO, fights in the Titan War
2010-2011: Harry (12-13) PoA
2010: Percy (16) is taken by Hera
2010: Jason Grace (15), Piper McLean (15), and Leo Valdez (15) LH
2011: Percy (16), Frank Zhang (16), and Hazel Levesque (13) SoN
2011: The Seven; Percy (16), Annabeth Chase (16), Frank (16), Jason (15-16), Piper (15), Leo (15), Hazel (13) MoA
2011: The Seven and Nico DiAngelo (14), HoH
2011: Percy (16-17) and the gang fight in the Giant War, and win
2012: Sally (38) gives birth to Andromeda “Andy” Lillian Blofis: August 9
2011-2012: Harry (14) GoF
2012: Sally (38) and Percy (17) find out Harry (14) is still alive and well by way of the TriWizard Tournament
2012: Percy (18) and friends are issued a years-long quest to help in the war against Voldemort
2012-2013: Percy (18) and friends join Percy’s long lost brother at Hogwarts
2012-2013: Harry (15) OotP, but now with his older brother
2013-2014: Percy (19) and Harry (16) HBP, return to Hogwarts with friends
2014: Harry (17) DH
2014: Percy (20) and friends help Harry (17) and the wizards in the war against Voldemort