Lancelot
"Are you scared? I'll keep you safe."
Parents: Big Macintosh and Blueblood
Siblings: Plum Glaze, Lemon Sours, Cupid, Helios, Flare Burst and Jonagold (half siblings), Rose Gold Apple
Gender: Male
Species: Unicorn
Allignment: Sun
Talent: Unknown
Birthplace: Ponyville

General Bio:

Lancelot is the older twin brother to Rose Gold Apple, and the second born child to Blueblood and Big Macintosh.
YEARS after the birth of Cupid, when the stallion was already an adult. Blueblood and Big Macintosh reunited so Cupid would have a chance to meet his extended family.
One thing lead to another, and eventually Blueblood ended up being welcomed into the family more officially and started dating Big Macintosh (with the permission of Sugar Bell of course)