Memba Them

American actor, singer and songwriter Lucas Grabeel was just 21 years old when he was first cast as Ryan Evans -- the enthusiastic singer, dancer and Sharpay's twin brother -- in Disney's "High School Musical" back in 2006.

Lucas shared the big screen with Zac Efron as the competitive yet caring boyfriend of Grabriella, Troy Bolton, Vanessa Hudgens as the charming and smart girl, Gabriella Montez, Ashley Tisdale as the bossy, hardworking and at times a tad narcissistic, Sharpay Evans, and Corbin Bleu as the independent and mature basketball player, Chad Danforth.

American actor and comic book writer James Marsters was 35 years old when he was cast as Spike -- the soulless turned 'good' vampire who enjoyed being a trickster -- in the 1997 drama series "Buffy The Vampire Slayer."

James was cast alongside Sarah Michelle Gellar as the cheerful and at times stubborn teenage gal, Buffy Summers, Alyson Hannigan as the eccentric and straight-A student, Willow Rosenberg, David Boreanaz as one of the evilest vampires, Angel and Nicholas Brendon as the sarcastic and loyal friend, Xander Harris.

Canadian native and actor Jason Priestley was just 21 years old when he first started playing Brandon Walsh -- the All-American boy attending West Beverly Hills High on the teen drama series "Beverly Hills 90210" back in 1990.

Priestley was cast alongside Brian Austin Green as the hard-working freshman who owns the mic during school announcements, David Silver, Tori Spelling as the cute blonde who loves nothing more than shopping, Donna Martin, Luke Perry as the 'too cool for school' boy, Dylan McKay and Jennie Garth as the school's most popular girl, Kelly Taylor.

American TV personality and realtor Jeana Keough was 50 years old when she made her debut on Bravo's first 'Housewives' franchise, "The Real Housewives of Orange County" back in 2006.

Joining Jeana in the dramatic series included her neighbor and friend Vicki Gunvalson as the insurance company owner and queen of "whoopin' it up," Tamra Judge as the fitness queen and Vicki's partner in crime, Lynne Curtin as the jewelry designer and Tammy Knickerbocker as Jeana's bestie.

Jeana was the recipient of Tamra's iconic wine slap during the 2011 season 6 finale.

Norwegian native and comedian Bard Ylvisaker was 31 years old when his hit song 'What Does The Fox Say' went viral on YouTube back in 2013. The hit track has accumulated more than one billion views and peaked at number six on the 'Billboard Hot 100.'

Bard shared the iconic song with his brother Vegard Ylvisaker, and the two hosted the Norwegian talk show, 'I kveld med YLVIS' from 2011 - 2016, where they created original skits such as 'Trapped In Ikea' ... this was also during the time of 'What Does The Fox Say's inception.

American actor Brent Spiner was 38 years old when he was first cast as "Data" -- the mindful and lively male android who served as an officer as he embarked on a Federation starship -- in the 1987-1994 series "Star Trek: The Next Generation."

Spiner shared the space with Patrick Stewart as the professional and committed command officer, Jean-Luc Picard, Michael Dorn as the low-key and somewhat bland, Lieutenant Worf, Jonathan Frakes as the first officer under Captain Jean-Luc Picard, William Riker and Diana Muldaur as the chief medical officer, Katherine Pulaski.

American veejay, comedian and actor Pauly Shore was just 21 years old when he first gained fame as a veejay for the television network MTV back in 1989 and shortly after became a household name with a long list of iconic '90s movies credits.

Following his days with MTV, Shore took his on-camera hosting skills over to scripted films and wheezed himself into some of the best comedies in the '90s including "Encino Man," "Son in Law," "Bio-Dome," "In The Army Now" ... and even lent his voice to the out-there BFF Bobby in "A Goofy Movie."

American actress Paige Turco was 26 years old when she was cast as the kindhearted and spirited news reporter April O'Neil in the sci-fi film ''Teenage Mutant Ninja Turtles II: The Secret Of The Ooze" back in 1991.

Paige shared the big screen with Ernie Reyes Jr. as the pizza delivery boy who infiltrates the Foot Clan to take down Shredder, Keno, Mark Caso as katana slicing turtle and the leader of the fast-fighting reptiles, Leonardo, and Leif Tilden as April's bo-staff wielding best friend, Donatello.

American television host, model and social activist Ananda Lewis was just 23 years old when she hit MTV's stage, grabbed the mic and interviewed some of the hottest artists and stars as a VJ back in 1996.

During her tenure with MTV, Ananda interviewed Destiny's Child, NSYNC, Britney Spears and Christina Aguilera amongst numerous other icons and was joined by other MTV VJs including Carson Daly and Sway.

Lewis also hosted MTV's "Hot Zone" which was a mash-up of music videos and celebrity interviews.

London natives and cousins, Rosie McClelland and Sophia Grace Brownlee were just five and eight years old when their rendition of Nicki Minaj's hit song 'Super Bass' went viral back in 2011.

The singing-duo were discovered by the world and shortly after their rise to fame even hit the stage with the super queen herself ... Nicki Minaj.

Their global recognition led them to meet A-listers Justin Bieber, Rihanna, Selena Gomez and Taylor Swift ... and their young, star-quality stage presence secured them interviewing at big awards shows in 2012 and 2013!

American actor RJ Mitte was just 16 years old when he was first cast as Walter White Jr. -- the son of Walter and Skyler White who loves video games, girls and hanging out with friends -- in AMC's classic drug-making drama series "Breaking Bad."

RJ shared the screen with Bryan Cranston as the caring yet calculated drug king, Walter White, Aaron Paul as the sensitive and sympathetic addict turned business partner, Jesse Pinkman, Anna Gunn as the worried and high-strung mother and carwash operator, Skyler White, and Dean Norris as the heroic and top-ranking officer, Hank Schrader.

Canadian actress Kristin Kreuk was just 18 years old when she first started playing Lana Lang -- the first love interest of Clark Kent ... who faked her death and tends to be gullible -- in the early 2000s Superman TV series "Smallville."

Kristen was cast alongside Tom Welling as the intensely strong Clark Kent, Michael Rosenbaum as the son who's seeking his father's approval, Lex Luthor, Erica Durance as the highly inquisitive and deeply investigated, Lois Lane and Allison Mack as the highly manipulative stealer and watchtower, Chloe Sullivan.

American reality star Jonny Drubel was 24 years old when he was cast to be a part of "Rich Kids of Beverly Hills" -- E!'s hit reality show, first airing in 2014 and running for four seasons.

Johnny brought the bougie-ness and cruised down Rodeo Drive with some of television's flashiest stars including Morgan Stewart as the blonde blogger searching for career success, Dorothy Wang as the daughter of a billionaire, Brendan Fitzpatrick as the Beverly Hills real estate agent, and EJ Johnson as the son of Magic Johnson, trying to make his own name for himself.

American actress Lindsay Sloane was 22 years old when she was cast as Big Red -- the captain cheerleader at Rancho Carne High School who tends to be bossy, full of herself and guilty of stealing cheers from other schools -- in the 2000 cheerleading film "Bring It On."

Lindsay shared the big screen with Kirsten Dunst as the new team captain, Torrance Shipman, Gabrielle Union as Torrance's rival cheer captain, Isis, Eliza Dushku as the new student and gymnast turned cheerleader, Missy Pantone and Jesse Bradford as the electric guitar player and Torrance's crush, Cliff Pantone.

American actress Nikki Blonsky was just 18 years old when she was cast as Tracy Turnblad -- the positive and optimistic high school student who does not necessarily fit in with the popular kids -- in the 2007 film 'Hairspray.'

Nikki shared the big screen with John Travolta as a laundry business owner and Tracy's mother, Edna Turnblad, Zac Efron as the talented and cocky lead male dancer, Link Larkin, Amanda Bynes as Tracy's best friend, Penny Lou Pingleton, and Queen Latifah as a radio DJ, Motormouth Maybelle.

Before this golden gal with blunt bangs turned into one of Hollywood's newest and hottest upcoming stars, she was just swinging her bat, dressin' up for her t-ball banquet and growing up in Spokane, Wash.

This cute kid now stars in a popular TV show that first hit the big screen in 2019, and her career has continued to sore. When she's not memorizing lines, you can find her under the hood of her truck fixing up her Ford Bronco.

Need one more little nudge on guessing this cutie? Just ask her on-screen sister Maude Apatow.