My Brother's Growing Up So Fast!

My Brother's Growing Up So Fast! is the 8th episode in K.C. Undercover season 1. It aired on April 3, 2015 to 2.94 million viewers.

'''NOTE! This episode plot, trivia, etc are not real. Most actors did not portray characters in this episode as this is a K.C. undercover Fanon wiki for fans to make their K.C. undercover imaginations come true.'''

Episode Plot
Kira brings home a blue serum and explains that she is using it for some tests. She says that it will make someone grow up to 7 feet if they drank it. Ernie later comes downstairs and notices the serum on the kitchen table, he drinks it and suddenly grows up to 7 feet. Now, The Coopers must figure out how to bring him back down before the effects are permanent. Meanwhile, Marisa is having trouble concentrating on her Chemistry assignment.

Main Cast

 * Zendaya as K.C. Cooper
 * Veronica Dunne as Marisa Clark
 * Kamil McFadden as Ernie Cooper
 * Trinitee Stokes as Judy Cooper
 * Kadeem Hardison as Craig Cooper

Recurring Cast

 * Samuel Thompson as Zach
 * Jessica Foster as Maria
 * Tina Mixer as Vice Principal Clayton
 * Daniel Symonds as Peter Reynolds
 * Derek Rivers as Agent Joe

Guest Cast

 * Berry Angel as Doreen
 * Andrew MacDonald as Brick
 * Lauren Taylor as Sierra
 * Mary Scheer as Mrs. Willemsburg

Absent Cast

 * Tammy Towsend as Kira Cooper

Episode Length
23:14

Trivia

 * Lauren Taylor who played Marisa's partner, Sierra will play "Shelby" on Best Friends Whenever.
 * Mary Scheer who played Mrs. Williemsburg will play "Gladys" on the Jessie spinoff, Bunk'd.