Samantha "Sam" Groves also known by her hacker name Root, is a highly intelligent computer hacker and contract killer with a keen interest in Finch and the Machine.
|Season 3 / Episode 19: - Most Likely To...|
Root: Lionel, you don't want to be uncooperative with a federal agent.
|Season 3 / Episode 17: - Entanglement|
Root: Do you really want to see what it looks like when two gods go to war?
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