In a collection of essays on
Friendship Is Magic, author Jen A. Blue wrote that Sunset Shimmer serves as a deliberate mirror to Twilight Sparkle: both characters share similar backgrounds as unicorns gifted at magic and former
protégées of
Princess Celestia. Blue analyzed Sunset Shimmer's role as the creator of artificial
cliques at Canterlot High School, and wrote that she functions as "an outside force, a manipulator seeking control" who divides the human versions of the
Mane Six and establishes rigid
social divisions that were "diabolical in origin." According to Blue, Sunset Shimmer's reformation through the
Elements of Harmony is similar to
Princess Luna's healing in the series premiere, as the Elements "heal her, bringing her to her original state" rather than punish her. Blue observed that in
Rainbow Rocks, Sunset Shimmer becomes the true protagonist and experiences a
character arc focused on guilt, redemption, and belonging as she learns "that while she has done terrible things in the past, and both her guilt and the anger of the people around her are legitimate, that doesn't mean there aren't still people who care about her." Blue praised the film for walking "a finer line than the show usually walks" in portraying both the legitimacy of others' wariness toward her and her own deserving of friendship and reformation. In her book
Ponyville Confidential, author Sherilyn Connelly wrote that Sunset Shimmer was one of
My Little Pony's "most emotionally complex characters." She compared her reformation to Luna's (as
Nightmare Moon), and lamented that Sunset will "pay the price for the rest of her life." In what Connelly described as the emotional crux of
Rainbow Rocks, a conversation between Twilight and Sunset reveals a shared pressure: Twilight is expected to save the day, a burden she feels is heavier ever since her ascension to princesshood, and Sunset is expected to redeem herself from her past wrongdoings, all while knowing that "others [expect] her to screw up and
ruin the day." In their analysis of
Equestria Girls in
queer popular culture and its use of
John Milton's epic poem
Paradise Lost, Melissa Rohrer and Sara Austin wrote that Sunset Shimmer serves as a
Satan figure whose backstory parallels Milton's
fallen angel: described as once being Princess Celestia's most promising student who was corrupted by greed and power, banished to Earth after failing to overthrow Celestia, and initially planned to use magical elements to corrupt and enslave humanity. Unlike Milton's Satan, Sunset Shimmer demonstrates "self-awareness and repentance that Milton's Satan never achieves," ultimately showing remorse and character growth that allows for her redemption and incorporation into a circle of friendship. Rohrer and Austin wrote that Sunset's character growth allowed her to become a trusted friend and ally throughout the series, as opposed to
Satan, who remains unrepentant and irredeemable throughout both
Paradise Lost and
Paradise Regained. Rohrer and Austin further wrote that the relationship between Sunset Shimmer as Satan and Twilight Sparkle as
Christ is a
queer reimagining of
Paradise Lost, emphasizing "
homosocial character development between the Christ and Satan figures that many other adaptations lack." They wrote that Twilight's
forgiveness and welcoming of Sunset into friendship, rather than
eternal punishment, illustrates what
José Esteban Muñoz called a "
queer utopia". They described Twilight's "embracing of Sunset Shimmer and her ability to reimagine and remake the world through empathy" as "very queer", wrote that it represented an alternative vision "where egalitarian love and friendship are possible without the tyranny of
Heaven." ==In popular culture==