|Created and Designed by||Robert Stainton (original concept and idea)|
|First Appearance||The Original Greeny Phatom Pilot Pitch|
|Episode count||Some episodes|
|Voiced by||Billy Crystal|
Arturo Mercado Jr. (Latin American Spanish)
Igor Sklyar (Russian)
Ikuko Tani (Japanese)
Martin Savignac (European and Canadian French)
Alexander Sandmeier (Swiss German)
Thomas Fritsch (European German)
|Friends and Allies||Little Guy (occasionally)|
Andrei Sergeyev Beansonovich, better known as Doctor or Dr. is a character in Greeny Phatom. He likes to sing Russian songs, which annoys Little Guy and his clones. He first appeared in the show's pilot pitch. He is voiced by Billy Crystal, but when he sings Russian songs, then he is voiced by Edward Khil
- The Original Pilot Pitch of Greeny Phatom Dr. pissed off Little Guy with his "Winter" Russian song and Little Guy shoots Dr..
- Doctor Fights Back: Dr. doesn't appear in that episode, however, he has his own musical segment called Sing Along Songs with Doctor, the part of each episode from Greeny Phatom where Dr. sangs Russian music including "Such a Miracle" by the Russian Trololo Man. This is the first time Sing Along Songs with Doctor appeared. (Dr. was interrupted only in James Sharp's version)
- Little Guy's D.O.L Weapon: In this episode, Dr. annoys Little Guy by playing music to intervene his sleep.
- Wanted: The Great Drink Thief: Dr. is the great drink thief, which means he steals drinks from anyone. Little Guy and his clones try to capture him. But when Dr. sang a Russian song, Little Guy shot him.
- The Cure of Santed Sailor: Dr. doesn't appear in that episode as well, as he already appeared in Sing Along Songs with Doctor. This is the second time Sing Along Songs with Doctor appeared.
- Pube Beanson goes to Showbiz Place Pizza: Another appearance in Sing Along Songs with Doctor, but Gangster Sailor interrupted his performance. This is the third time Sing Along Songs with Doctor appeared, but it's also the first time (second in James Sharp's version) Sing Along Songs with Doctor was interrupted by random Greeny Phatom characters.
- Gangster Sailor Responds to Sing Along Songs with Doctor & iMeTec Kid: There are 2 cameos:
- A clip from Pube Beanson goes to Showbiz Place Pizza.
- Dr. is taking a bath, which causes Gangster Sailor to beat him up.
- Coke Colar III: Little Guy had a talk with Dr., which he told Dr. to stop making fun of someone. When Dr. said another word, Little Guy molests him.
- Getting Handy: Dr. sang a song, interrupting Little Guy, so he punished Dr. for interrupting his work with his Russian songs. His next appearance in the episode shows Dr. complaining to Little Guy.
- Geo Guy vs. The Fruit Salad Man: When he was trying to sing, Little Guy shows him a lesson (which he means by aggression).
- He very closely resembles Dr. Beanson, possibly hence his name. The only difference is he doesn't have a moustache while Dr. Beanson does.
- Ironically, in Latin American Spanish, Dr. is voiced by Arturo Mercado Jr. who is the son of Dr. Beanson's voice actor Arturo Mercado.
- According to a Season 20 episode, Dr. gained his love for singing from getting hit in the noggin with a rock that Dr. Beanson was kicking on the smiley face potato farm.
- In the European and Canadian French dubs of Greeny Phatom, he is voiced by former TVA announcer Martin Savignac.