Eleanor Zoe Bishop, mostly known as Elle, is a fictional character on the NBC series Heroes. She is portrayed by Kristen Bell. Elle appeared as one of the new characters introduced in Season Two and according to contract, would continue on the series for at least 13 episodes into Season Three.

Elle is introduced in the episode "Fight or Flight" as an agent of the Company, an organization whose primary purpose is to identify, monitor and study those individuals with special abilities. The daughter of Company head Bob Bishop, she possesses the power to generate and manipulate electricity. Elle is portrayed as mentally unstable, which is attributed to extensive "testing" condoned by her father to research her abilities when she was young.

In 2007, following the cancellation of Veronica Mars, actress Kristen Bell had voiced interest in appearing on Heroes because she was a fan. In July 2007, during a train ride back from the San Diego Comic Con with Heroes actors Zachary Quinto and Masi Oka, and writers from the series, the writers had mentioned that if Bell "ever want[ed] to come on Heroes, give us [writers] a call", to which Bell said she would love to. Announced in August 2007, Bell was to portray Elle, a "mysterious young lady" with an "awesome power" for a total of thirteen episodes.Heroes creator Tim Kring and the writers had created the character of Elle with the idea in mind that she was a "cautionary tale" of what could happen if the other characters had known of their abilities for the duration of their lives as Elle did. Kring pitched Bell the idea for the character "which she loved" and soon they were "off and running." The casting of Bell, as Kring explains, "was not easy to pull off," but because of the large ensemble cast of the series and multiple story arcs, "we found a way to jump into a small window in [Bell’s] schedule."

Peter Petrelli, portrayed by Milo Ventimiglia, is a fictional character on the NBC science fiction drama series Heroes. He is a hospice nurse-turned-paramedic in his mid-20s with the power to absorb and mimic the powers of other people with special abilities, or powers. Sensitive and compassionate, the character was initially defined by his complex relationship with his older brother, Nathan. Since that time, Peter Petrelli has had to deal with the outcomes from the decisions that his abilities force him to make.

In the premiere episode, Peter Petrelli is a hospice nurse living in New York City. Differences between Peter and Nathan, an ambitious politician focused on his congressional campaign, cause tensions between the two, which are exacerbated when Peter starts having extraordinarily vivid dreams of flying. He confides in Nathan, who passes them off as a sign of psychological distress. Peter summons Nathan to witness as he jumps off a building to prove he can fly. However, it's Nathan who flies, catching Peter as he falls. Peter blacks out after the brothers lose their grip on each other, waking up in the hospital with muddled recollections of what happened. Nathan claims neither of them flew and Peter is led to believe he's going crazy. To discover the truth, Peter threatens to jump from another rooftop if Nathan doesn't tell him what really happened. Nathan admits that they both flew. Peter first thinks Nathan is only telling him what he wants to hear, until Nathan points out that Peter is levitating as they argue. Peter's later attempts to fly, when away from his brother's presence, are initially unsuccessful.