@chai2,
Unlike Barbie, GI Joe has exhibited consistent dedication to his military career for the past 52 years. He has never dabbled in other careers, he has been a fighting military man consistently. Barbie on the other hand has mysteriously been able to pursue many dozens of careers without ever having to study, without ever having to work at any one of them for more than fifteen minutes. How odd that we have a scientist Barbie with a microscope, yet never preceded by a student Barbie who sits in classes and takes notes. Among Barbie's many careers are:
Education
Aerobics instructor (1984, 2009)
Art teacher (2002)
Dance teacher
Elementary teacher (1985, 1992, 1995, 1996, 2006, 2010)
Football Coach
Gymnastics Coach
Sign language teacher (1999)
Spanish language teacher (2001)
Special Education Teacher
Student teacher (1965)
Swim teacher (2005, I can be... Swim Teacher 2008)
Yoga Teacher
Medicine
Dentist
Eye Doctor
Doctor (1988, Pediatrician 1994, I can be... Baby Doctor 2008)
Nurse (1961)
Surgeon (1973)
Veterinarian (I can be... Zoo Doctor 2008, I can be... Pet Vet 2009)
Military
Paratrooper (2000)
United States Army officer (1989, Desert Storm 1992)
United States Air Force jet pilot (1990)
United States Air Force Thunderbirds (1993)
United States Marine Corps officer (1991)
United States Navy petty office QM1 (1991)
Political
Ambassador for world peace (1986)
Chancellor (I can be... Chancellor 2013), (available only in Germany)
United States President (2000)
Presidential candidate (Barbie for President 1992, 2004, 2008 & 2012)
UNICEF Summit diplomat (1990)
Public service
Firefighter (1995)
Life guard (Baywatch 1994)
Police officer (1993)
Pre-eclosal pupa-stage Norman Krumholz (1964)
Canadian Mountie (2005) (available only in Canada)
Science and engineering
Architect (2011)
Astronaut (1965, 1985, 25th Apollo 1994)
Computer Engineer (Computer Engineer Barbie, 2010), (accompanying book pulled by Mattel in 2014[1])
Paleontologist (1997)
SeaWorld trainer (I can be... SeaWorld Trainer 2009)
Transportation
Pilot (1990)
Flight Attendant (American Airlines 1973-75, Flight Time 1989)
NASCAR driver (1998, I can be... Race Car Driver 2009)
Stewardess (American Airlines 1961-64, Pan Am 1966)
Tour guides (Toy Story 2 Tour Guide Special Edition 1999)
Arts
Artist
Ballerina (1961–present)
Chef (1996, I can be... Bakery Chef 2008)
Designer (2008)
Fashion Model (1959–present)
Guest editor of international fashion magazine
Hair Dresser (2008)
Make-up artist (Barbie loves Mac 2007)
Movie actress ("Barbie A Fashion Fairytale", 2010 and "Barbie A Fairy secret", 2011)
Olympic Gymnast
Pet stylist (I can be... Pet Stylist 2008)
Photographer
Pop singer (Barbie and the Rockers 1986, I can be... Rock Star, 2009)
TV chef (I can be... TV chef, 2008)
Wedding stylist (I can be... Wedding Stylist, 2009)
Business
Business executive (1960, 1978, Day to Night 1985, 1999)
Owner of Willow's Cafe (Barbie Princess Charm School 2011)
Secretary (2007)
See's Candy cashier (2002)
Waitress (Barbie Princess Charm School, 2011)
Miscellaneous
American Beauty pageant girl (1973, 1978, 1991)
Cat burglar (Barbie by Christian Louboutin)[2]
Movie Star (1977, 1985, 1997, 2001, 2011)
Ocean Treasure Explorer (2013)
Soda fountain waitress (Coca Cola Series 1998)
Street Rapper (1992)
Babysitter (Barbie Babysits 1963)
Cheerleader (1973, Pom Pom Divas 2006, Dallas Cowboys Cheerleader Barbie 2008)
Cowgirl (1981)
DC Comics superheroines and villainesses, (including Wonder Woman, Catwoman, Batgirl, Supergirl, Black Canary, Poison Ivy, Harley Quinn, Lois Lane, and Carol Ferris)
Marvel Comics superheroines
McDonald's cashier (1983)
News anchor (I can be... News Anchor 2010)
Princess (1990s-present)
SCUBA diver (1994)
https://en.wikipedia.org/wiki/Barbie's_careers
Now while you believe that Barbie is a scientist, a princess or a scuba diver simply because she says so and has the right accessories, my bet is with GI Joe for his dogged determination, consistency and single-minded determination.