Question: What character does the pianist of Ninja Sex Party play?

Context paragraphs:
NSFW (album): NSFW is the debut studio album by the American comedy band Ninja Sex Party, released on September 29, 2011.  The track "Dinosaur Laser Fight" was the only single released from the album, and has a music video partially animated by Arin Hanson, also known as Egoraptor.  Every song on the album has a music video except for "Introduction," "Accept My Shaft," and "Outroduction."

Starbomb: Starbomb is an American musical-comedy group composed of Dan Avidan and Brian Wecht of musical-comedy duo Ninja Sex Party together with Flash animator and Internet personality Arin Hanson.  The songs of Starbomb consist of video game parodies; Avidan provides vocals, Wecht produces instrumentals, and Hanson provides rapping vocals.  All three are also known as a part of YouTube Let's Play webseries "Game Grumps".

Brian Wecht: Brian Wecht is a theoretical physicist, comedian, musician, a member of "Game Grumps", as well as the co-founder of "The Story Collider", a live science-based story telling podcast.  He plays the character Ninja Brian in the comedy rock musical duo Ninja Sex Party.  He attended UCSD for his Ph.D. in particle physics.  Wecht held research positions at Harvard University, the Center for Theoretical Physics at MIT, the Institute for Advanced Study, and the University of Michigan, prior to becoming a faculty member at Queen Mary University of London.  While there, Wecht worked on string theory, supersymmetry, and quantum field theory.  In 2009, he joined Ninja Sex Party with singer Dan Avidan.  Six years later, he left his long time career of academics and theoretical physics, with an extensive record of very highly cited contributions, to join the comedy gaming YouTube channel, "Game Grumps".

Player Select: Player Select is the second studio album by American comedy supergroup Starbomb, composed of Dan Avidan and Brian Wecht of American comedy duo Ninja Sex Party and Flash animator and Internet personality Arin Hanson.  The album was released December 16, 2014 on iTunes, Amazon Music, Spotify and CDBaby.  Following in the direction of the previous album, "Player Select" is a video game parody album featuring the often-provocative adult comedy of Ninja Sex Party and incorporating the video-game humor of Hanson.

Strawberries and Cream: Strawberries and Cream is the second studio album by the American comedy band Ninja Sex Party.  The album was released on April 15, 2013.  Three tracks from the album, "FYI I Wanna F Your A", "Next to You", and "Unicorn Wizard", were released as singles prior to the album's release.

Ninja Sex Party: Ninja Sex Party (often shortened to NSP) is an American musical comedy duo consisting of singer Dan Avidan and keyboardist Brian Wecht, created in 2009 in New York City and currently based in Los Angeles.  They are also known as two thirds of the video game-based parody musical trio Starbomb together with frequent collaborator Arin Hanson, and as a part of the YouTube Let's Play webseries "Game Grumps", also with Hanson.

Starbomb (album): Starbomb is the eponymous debut studio album by American comedy supergroup Starbomb, composed of Dan Avidan and Brian Wecht of American comedy duo Ninja Sex Party and Flash animator and Internet personality Arin Hanson.  Starbomb brings together the sexually provocative music stylings of Ninja Sex Party and the video game-based humor of Hanson.  The album was released on December 17, 2013.  Starbomb later collaborated on a second album, "Player Select", released on December 16, 2014.

Attitude City: Attitude City is the third studio album by the American comedy duo Ninja Sex Party.  The album was released on July 17, 2015.  Six tracks from the album, "Party of Three," "Dragon Slayer," "Attitude City," "Why I Cry," "Peppermint Creams," and "Road Trip" were all released as singles on their YouTube channel prior to its release.

Under the Covers (Ninja Sex Party album): Under the Covers is a the fourth studio album by American comedy duo Ninja Sex Party, and their first cover album.  The concept for the album and title were revealed on July 28, 2015, and the album released on March 4, 2016.  Unlike their previous albums, "Under the Covers" is composed only of covers of songs from the 1970s and 1980s and strays from the duo's traditional comedic style.

Dan Avidan: Leigh Daniel "Dan" Avidan (born March 14, 1979), also known by his stage name Danny Sexbang, is an American musician, Internet personality, singer-songwriter, and comedian.  He is one half of the musical comedy duo Ninja Sex Party with Brian Wecht, as well as the co-host of the Let's Play webseries "Game Grumps" with Arin Hanson.  He is also part of the video game-based comedy music trio Starbomb, alongside both Wecht and Hanson.

Supporting paragraphs: Ninja Sex Party Brian Wecht
Answer: Ninja Brian