|First Appearance||Young Bloods|
|Last Appearance||Young Bloods|
|Allegiance||Diego's group (formerly)|
|“||It hurts, it hurts! No please.. please stop!||”|
— Sean while being harnessed.
Sean was a part of a group of lost children led by Diego in Richmond, Virginia.
Sean is first seen at Diego's shelter, were all the lost kids stayed. When Hal arrived, Sean points her rifle at him. Diego takes Sean and a few other children back to the 2nd Mass camp to retrieve extra supplies, and the following morning she plays soccer with a few other kids. When they arrived back to the shelter, it was destroyed by skitters and all the children were kidnapped except Jonny. Sean later goes with Diego to the harnessing facility to get them back, however they are all captured. Sean is not seen tied up with the remaining kids, and is heard screaming for help while she was being harnessed.
|Season 2 appearances|
|Worlds Apart||Shall We Gather at the River||Compass||Young Bloods||Love and Other Acts of Courage|
|Homecoming||Molon Labe||Death March||The Price of Greatness||A More Perfect Union|