Why Quicksilver Is in 'X-Men' and 'Avengers

How does Marvel have the film rights for Quicksilver and Scarlet Witch if they don't have the X-Men's rights? - Quora

Avengers 2′ — Joss Whedon Confirms Scarlet Witch and Quicksilver, Teases Iron Man

Marvel's Scarlet Witch & Quicksilver Reunite In New Series

New Book Clarifies Scarlet Witch & Quicksilver's Mutant MCU Powers - Heroic Hollywood

Mutant Twins Mania! Quicksilver and Scarlet Witch Confirmed For 'Marvel's The Avengers 2′

Where Were Scarlet Witch & Quicksilver During Ultron's Multiverse Attack?

New 'Avengers: Age Of Ultron' teaser welcomes Quicksilver, Scarlet Witch - watch

Remender's Uncanny Avengers relaunch puts Quicksilver and Scarlet Witch into focus

Why did Scarlet Witch get multiple powers when Quicksilver only

Marvel Comics - Scarlet Witch - The Scarlet Witch & Quicksilver #1