Corey Haim and Corey Feldman

Corey Haim's tragic death exposed widespread confusion about him and his frequent collaborator Corey Feldman, as many confessed via Twitter that they don't know which Corey is which. The two shared much in common, besides the name Corey: early roles in Stephen King projects, joint film appearances, eventual struggles with drugs, and a dual comeback attempt on the A&E show The Two Coreys. For those of us who grew up with the Coreys, there's no getting them confused. But for anyone unfamiliar with their work, here is our quick guide to the Coreys' respective careers:

Corey Feldman

The darker-haired, squarer-faced Corey had the bigger early roles. After parts on Eight is Enough, The Bad News Bears, and Mork & Mindy, he voiced young Copper in Disney's The Fox and the Hound (adorably) before beginning a mid '80s run of significant film roles: Friday the 13th: The Final Chapter, Gremlins, Goonies, and, in his most impressive turn as a young actor, the Stephen King adaptation Stand by Me.

See photos of Corey Haim's 13 most memorable roles

He then starred in several films with Haim, including the cult classic The Lost Boys, License to Drive, Dream a Little Dream, and, as their careers sagged in the mid-90s, the straight-to-video National Lampoon's Last Resort. He also returned to voiceover work in the '90s, playing Donatello in Teenage Mutant Ninja Turtles and TMNT III (but not II).

He dabbled in schlocky but fun B-movies for several years, until his reunion with Haim for The Two Coreys reality show on A&E. The show, which first aired in 2008, presented Feldman as the more stable of the two Coreys. Feldman and Haim also joined the straight-to-DVD sequel Lost Boys: The Tribe. Feldman has several new projects slated for release, including another Lost Boys sequel.

Feldman is also known for being one of Michael Jackson's young cohorts.

Corey Haim

The lighter-haired, softer-featured Corey debuted in 1984's Firstborn, and then appeared in the Stephen King werewolf project Silver Bullet alongside Gary Busey and Lost's Terry O'Quinn. His breakthrough role was as the title character In Lucas, for which he received widespread praise for his sensitive portrayal of an undersized nerd with heart to spare.

See photos of child stars gone too soon

His run of films with Feldman included the cult classic The Lost Boys, License to Drive, Dream a Little Dream, and, as their careers sagged in the mid-90s, the straight-to-video National Lampoon's Last Resort. His '90s films also included the action film Prayer of the Rollerboys, a Dream a Little Dream sequel that again paired him with Feldman, and Demolition High and Demolition University.

In a 2004 interview with The Sun, he said he was sober and happy but described years of drug use. He told the paper he began drinking beer during Lucas and smoked his first joint during Lost Boys. Eventually he took 85 valium a day, he said. The Two Coreys on A&E found him struggling with his career and to maintain his friendship with Feldman. He later appeared with Feldman in the straight-to-DVD sequel Lost Boys: The Tribe and had a memorable appearance in Crank 2: High Voltage.

He had several projects in development at the time of his death.

What was your favorite film with the Coreys?