Question: What character in Good Luck!! is played by a Japanese actor who is also a singer and a radio personality?

Context articles: Good Luck Flag
Section Eight Productions
Daruma doll
Donnie Simpson
Takuya Kimura
Kin no unko
Tea pet
Good Luck!!
Good Luck Charlie, It's Christmas!
Good Luck (AOA song)

The Good Luck Flag, known as hinomaru yosegaki (日の丸寄せ書き ) in the Japanese language, was a traditional gift for Japanese servicemen deployed during the military campaigns of the Empire of Japan, though most notably during World War II.
 The flag given to a soldier was a national flag signed by friends and family, often with short messages wishing the soldier victory, safety, and good luck.
Section Eight Productions, or just Section Eight, was a production company founded in 2000 by film director Steven Soderbergh and actor and director George Clooney.
 It produced the critical hits "Far From Heaven", "Insomnia", "Syriana", "A Scanner Darkly" and "Michael Clayton", as well as Clooney-directed films "Confessions of a Dangerous Mind" and "Good Night, and Good Luck".
 In 2005, "Syriana" and "Good Night, and Good Luck" picked up eight Oscars nominations between them.
 With Soderbergh citing a desire to focus on directing, and Clooney forming production company Smoke House Pictures with Grant Heslov, the two decided to shut down Section Eight at the end of 2006.
The Daruma doll (達磨 , daruma ) , also known as a Dharma doll, is a hollow, round, Japanese traditional doll modeled after Bodhidharma, the founder of the Zen sect of Buddhism.
 These dolls, though typically red and depicting a bearded man (Dharma), vary greatly in color and design depending on region and artist.
 Though considered an "omocha", meaning toy, by some, Daruma has a design that is rich in symbolism and is regarded more as a talisman of good luck to the Japanese.
 Daruma dolls are seen as a symbol of perseverance and good luck, making them a popular gift of encouragement.
 The doll has also been commercialized by many Buddhist temples to use alongside the setting of goals.
Donnie Simpson (born January 30, 1954) is a longtime American radio DJ as well as a television and movie personality.
 He hosted "The Donnie Simpson Morning Show" on Washington, D.C. radio station WPGC-FM from March 1993 to January 29, 2010.
 Currently, he hosts "The Donnie Simpson Show" on D.C.-based radio station WMMJ-FM (Majic 102.3 FM), which began airing on August 17, 2015.
 Simpson is the first urban-format radio personality to have an annual salary over $1 million without being syndicated.
 In 2003, Simpson, through his agent and longtime friend, George Parker, inked a 6-year, 8-figure deal with WPGC-FM making Simpson the highest paid African-American radio personality ever without syndication.
 He was "Billboard's" "Radio Personality of the Year" and "Program Director of the Year".
 He has also been known by the nicknames, "Love Bug", "The Green-eyed Bandit" and "Dr. Green Eyes" for his luminous, light green eyes.
Takuya Kimura (木村 拓哉 , Kimura Takuya , born November 13, 1972) , also known as Kimutaku, is a Japanese actor, singer, radio personality.
 He is regarded as a Japanese icon after achieving an unprecedented success as an actor and influencing Japanese culture, and established himself as one of the most successful celebrities in Asia.
Kin no unko (金のうんこ ) or "golden poo" is a Japanese cultural phenomenon.
 It is a symbol of good luck, as the name is a pun meaning "golden poo" and "good luck" in Japanese.
 By 2006, 2.7 million mobile phone charms in this form had been sold.
 The symbol, or something similar to it called "unchi", appears as an emoji available on many mobile devices that support a Unicode expansion made in the summer of 2014.
 The charm is unusual outside of Japan but has been available from the English language website ThinkGeek.
A tea pet, also known as a tea lover's pet, is a small clay figure which is kept by some tea drinkers for good luck.
 The history of tea pets can be traced back to the Yuan dynasty (1206–1368).
 They are usually made of "zisha" or Yixing clay, from the region near Yixing in Jiangsu province, China.
 Just like Yixing teapots made of the same clay, tea pets are unglazed, so that they are mostly monochromatic with a rough surface.
 Tea lovers in China raise a tea pet by placing it on the tea tray during tea time and pouring out the tea over it.
 The most popular figure of the tea pet is the "pee-pee boy", which is used to judge whether the water is hot enough to make tea.
 Tea pets are also molded into zodiac animals or Chinese mythical creatures such as dragons, Pixiu, Qilin, etc., to symbolize good luck, fortune and happiness, as well as historical or mythical characters such as Guanyin, Maitreya and Zhu Geliang.
Good Luck!!
(グッドラック！！) is a 2003 Japanese television drama starring Takuya Kimura and Kou Shibasaki.
 The story revolves around an up-and-coming pilot, Hajime Shinkai, and portrays his interactions with others as he progresses along the road to becoming a captain.
 As is common in many Japanese drama series, it blends drama and romance with comedic elements.
 This drama also emphasizes hardship of being a pilot or a cabin crew, and the serious nature of the industry they're in, which puts thousands of lives in its hands.
Good Luck Charlie, It's Christmas!
 (also known as Good Luck Charlie: The Road Trip Movie in the United Kingdom and Ireland) is a 2011 Christmas film based on the Disney Channel Original Series "Good Luck Charlie".
 The film was directed by Arlene Sanford and written by Geoff Rodkey, and stars Bridgit Mendler, Leigh-Allyn Baker, Bradley Steven Perry, Mia Talerico, Eric Allan Kramer, and Jason Dolley as the Duncan family.
 The Disney Channel Original Movie follows the Duncan family on their road trip to Amy Duncan's parents' house for Christmas.
 It premiered on December 2, 2011 on Disney Channel ten years after Disney Channel's last Christmas-themed original movie, "'Twas the Night" in 2001.
"Good Luck" is a song recorded by South Korean girl group AOA for their fourth extended play of the same name (2016).
 It was released as the title track from the EP by FNC Entertainment and distributed by LOEN Entertainment on May 16, 2016 in conjunction with the mini-album.
 The lyrics were written by Han Seong-ho, Jang Yeon-jeong and Innovators and the music was composed by Matthew Tishler, Aaron Benward and Felicia Barton.
 To promote the song and the EP, AOA performed "Good Luck" on several South Korean music programs, including "Music Bank", "Show!
 Music Core" and "Inkigayo".
 A music video for the title track was also released on May 16.
 The song was a commercial success peaking at number 2 on the "Gaon" Digital Chart.
 It has sold over 545,952 digital copies as of July 2016.