Question: Which character did a member of the cast of "Love Actually" voice in "Adventure Time"?

Context articles: Marceline the Vampire Queen
List of songs recorded by Kelly Clarkson
Love Actually
Love Actually... Sucks!
Rodrigo Santoro
Princess Bubblegum
Olivia Olson
Adventure Time: Finn &amp; Jake Investigations
Salaam-e-Ishq: A Tribute to Love
Red Nose Day Actually

Marceline the Vampire Queen is a character in the American animated television series "Adventure Time" created by Pendleton Ward.
 She is voiced by Olivia Olson in most appearances, by Ava Acres as a child and by Cloris Leachman as an old woman.
 Marceline is a fun-loving 1,000-year-old vampire queen.
 The name "Marceline" is based on the middle name of a childhood friend of Ward's, Marie.
 The artistic design for Marceline was created by Ward, with small changes and additions added by Phil Rynda, former lead-character designer and prop designer for "Adventure Time".
 Unlike a traditional vampire, Marceline does not need to drink blood to survive; rather, she eats the color red.
 Marceline is a musician who plays an electric bass that she made from her family's heirloom battle-axe.
American singer Kelly Clarkson has recorded material for her seven studio albums.
 After signing a contract in 2002 with RCA Records, a division of then-Bertelsmann Music Group (now Sony Music), 20-year-old Clarkson released the double A-side single "Before Your Love" / "A Moment Like This" and began to record tracks for her debut studio album, "Thankful" (2003).
 Its lead single, "Miss Independent", received a nomination for a Grammy Award for Best Female Pop Vocal Performance in 2004.
 "Miss Independent" was followed by "Low" and "The Trouble With Love Is", which was featured as a single from the soundtrack of the film "Love Actually".
 In 2004, Clarkson recorded the song "Breakaway", which was released as a single from the of the film "".
 The song's commercial success inspired Clarkson to name her second studio album "Breakaway".
 The album won a Grammy Award for Best Pop Vocal Album in 2006, while its second single, "Since U Been Gone", won for Best Female Pop Vocal Performance.
 Subsequent singles, "Behind These Hazel Eyes" (2005), "Because of You" (2005), and "Walk Away" (2006), became successful hits.
 Clarkson's third studio album, "My December", was released in 2007.
 The album became a subject of a dispute with then RCA Music Group chairman Clive Davis, who criticized the album and suggested that Clarkson reunite with her previous collaborators. "
Never Again", the lead single from "My December", became its only hit single.
 Succeeding releases from "My December" included "Sober", "One Minute", and "Don't Waste Your Time".
Love Actually is a 2003 Christmas-themed romantic comedy film written and directed by Richard Curtis.
 It features an ensemble cast, many of whom had worked with Curtis in previous film and television projects.
 The screenplay delves into different aspects of love as shown through ten separate stories involving a wide variety of individuals, many of whom are shown to be interlinked as their tales progress.
 Most of the film was filmed on location in London.
 The story begins five weeks before Christmas and is played out in a weekly countdown until the holiday, followed by an epilogue that takes place one month later.
Love Actually... Sucks!
 () is a 2011 Hong Kong movie, directed by Hong Kong Chinese film producer Scud (Danny Cheng Wan-Cheung 云翔).
 The film's title is a humorous wordplay on the romantic comedy film story "Love Actually", as it deals with similar complicated and interconnected relationships.
 It was released at the 47th Chicago International Film Festival, in October 2011.
 It explores several themes traditionally regarded as 'taboo' in Hong Kong society, in an unusually open, convention-defying way, featuring frequent full-frontal male and female nudity.
 It is the fourth of five publicly-released films by "Scud".
 The four others are: "City Without Baseball", released in 2008, "Permanent Residence" in 2009, "Amphetamine" in 2010, and his most recent, "Voyage", in 2013.
 His sixth film, Utopians, has now been completed and awaits release, whilst his seventh, Naked Nation, is currently in production.
Rodrigo Junqueira dos Reis Santoro (] ; born August 22, 1975) is a Brazilian actor.
 He has appeared in many successful movies, including "Brainstorm" (2001), "Carandiru" (2003), "Love Actually" (2003), "Che" (2008), "I Love You Phillip Morris" (2009), and "Rio" (2011).
 He is perhaps most famous for his portrayal of Xerxes in the movie "300" (2006) and its sequel "" (2014).
 He was a series regular on the television series "Lost" portraying the character Paulo, and plays Hector Escaton in HBO's "Westworld" (2016).
Princess Bonnibel Bubblegum of the Candy Kingdom (voiced by Hynden Walch) is a fictional character in the "Adventure Time" animated series on the Cartoon Network.
 She is the current incarnation of the Candy Elemental, comparable to the inhabitants of the Candy Kingdom, who are all composed of types of desserts and candies.
 In the season 7 episode "Elemental," Princess Bubblegum was revealed to be the current Candy Elemental (in the "Adventure Time" universe, the Elementals are the embodiments of the four main elements that make up the world: ice, fire, candy and slime.
 They have existed since the beginning of life, living, dying and reincarnating for eons and millennia).
 She rules over the Candy Kingdom, but in the Season 6 episode "Hot Diggity Doom" (the first part of the season's finale), an election was held and she lost to the King of Ooo by a landslide.
 As a result, she no longer ruled the Candy Kingdom and the King of Ooo replaced her as the new ruler, until a rebellion against King of Ooo allowed her to reclaim the throne in "The Dark Cloud".
 Her proficiency in science and fluency in Korean and German are a testament to her high intelligence.
 In 2014, Olivia Olson (the voice actress of Marceline the Vampire Queen) alleged at a book signing that the show's creator Ward had confirmed that Marceline and Princess Bubblegum dated but were unable to put any official confirmation in the show due to controversy.
 However, Olsen seemed to redact the statement in a Tweet that same day by stating "I like to make things up at panels.
 Ya'll take my stories way too seriously".
Olivia Rose Olson (born May 21, 1992) is an American actress and singer-songwriter, mostly known for her voice roles as Vanessa Doofenshmirtz in "Phineas and Ferb" and Marceline the Vampire Queen in "Adventure Time".
 She also played the character of Joanna in the 2003 film "Love Actually" and its 2017 short sequel "Red Nose Day Actually".
Adventure Time: Finn & Jake Investigations is a 2015 action adventure video game developed by Vicious Cycle Software under license from Cartoon Network Interactive.
 It was published by Little Orbit for Microsoft Windows, PlayStation 3, PlayStation 4, Xbox 360, Xbox One, Wii U, and Nintendo 3DS.
 This is the fourth game based on the animated television series "Adventure Time" following "", and the first action adventure title in the series presented in full 3D graphics.
 The game was first announced on April 21, 2015, and released on October 20, 2015 in North America, and was released on November 6, 2015 in Europe.
Salaam-e-Ishq: A Tribute To Love is a 2007 Indian romantic drama anthology film.
 Directed by Nikhil Advani, it featured an ensemble cast of stars including Salman Khan, Priyanka Chopra, Anil Kapoor, Juhi Chawla, Akshaye Khanna, Ayesha Takia, John Abraham, Vidya Balan, Govinda, Shannon Esra, Sohail Khan and Isha Koppikar in lead roles.
 It is an unofficial remake of 2003 British film, "Love Actually".
Red Nose Day Actually is a 2017 British romantic comedy television short film, acting as both a sequel to the 2003 feature film "Love Actually", and a part of the fund-raising event Red Nose Day 2017.
 "Love Actually" writer and director Richard Curtis returns alongside cast members Hugh Grant, Liam Neeson, Colin Firth, Andrew Lincoln, Chiwetel Ejiofor, Keira Knightley, Martine McCutcheon, Bill Nighy, Thomas Sangster, Lúcia Moniz, Olivia Olson, Marcus Brigstocke, and Rowan Atkinson.