Berlioz is a major character in Disney's 1970 animated feature film, The Aristocats. He is a gray-furred kitten, the youngest son of Duchess, and the younger brother of Toulouse and Marie.
There are roughly one-sh*t billion tropes so PLEASE look through them before adding one. Otherwise add what you like. ADDITION: PLEASE read through the trope description provided before submitting something. It's not a huge deal but too often people submit characters that don't fit just because they misinterpreted the title...
