|Portrayed by||A butterfly; CGI|
|First appearance||Brave New World|
Butterflies are often symbolic of the cautions one must take with time travel. They are also symbolic of change and metamorphosis. Butterflies are also used to represent beauty.
Later, Samuel tells Hiro, "I've got my own butterflies that need crushing."
A monarch butterfly flutters by and lands next to Noah Bennet, who sits outside the Odessa Unity Summit on June 13, 2014. The butterfly enters the summit and flies past several reporters. It goes back outside and lands on an apple where Noah was sitting. It flies away just before a large explosion.
Malina comes across a monarch butterfly lying frozen in the snowy Arctic. She picks up the butterfly and uses her powers to revive the frozen insect until it flies off on its own. She then turns her attention to a large flock of butterflies lying dormant in the snow. She raises her hands, and they all flutter away.
After Quentin Frady turns out to be evil after Noah returned from the past, Noah comments that Quentin is the butterfly, referring to the fact that he inadvertently changed something he shouldn't have while time traveling.
After traveling back in time to save Noah Bennet's life, Tommy Clark tells Noah that he couldn't stop the H.E.L.E. so he followed Hiro's instructions and followed "the tiniest thread, the smallest butterfly" to find a way to change the future. Tommy states that his doing this eventually led him to Noah who he saved as Tommy realized he held the key to saving the future.
- In one of Hiro's blog entries called "Where to Begin...", Hiro asks, "Do you believe in the Butterfly Effect?"
- In an entry called "Bound by Death and Luck", Hiro says, "Many butterflies cause too much chaos."
- During his metamorphosis to gain insect-like abilities, Mohinder blogs in Entry #5 that "My increased adrenaline has jump started my metabolism. My appetite is virtually insatiable. It is said that a butterfly can store twelve times its body weight before metamorphosis. At the rate I'm going I may have wings by this time next week."
- After time traveling away from a happy Charlie, and then seeing her quite cold the next day, Hiro wonders if he smooshed a butterfly that led her to being mad. (Chapter 35)
- In a post called "Back on Track" on the blog A Hero's Quest, Hiro says, "We mustn't step on the butterflies."
- In another post called "A Sign!", Hiro says he's "a little wary of time travel these days... Too many butterflies."
- In a post titled "Blast from the Past", he says, "I promised Ando that I would NOT step on any butterflies."
In the epilog, the monarch butterfly that flies near Malina is able to survive the Arctic because the air is "incongruously warm". The butterfly is then "borne on a glorious thermal" as it flies near the aurora with the hole in the middle that resembles an eclipse.
- The second episode of Season Three is called The Butterfly Effect.
- Hiro often calls Samuel Sullivan "Butterfly Man".
- The episode Parasite uses the song "Un Bel Di Vedremo" from Giacomo Puccini's opera Madame Butterfly.
- One of Lydia's tattoos is a butterfly.
- Penelope Jean Lovegood III wears a butterfly barrette in her hair.
- For other uses of butterfly, see butterfly (disambig).