UFC featherweight champion Conor McGregor is known for his brash and tough attitude.

“The Notorious” hasn’t always been a superstar MMA fighter. Here’s a blast from the past as Conor’s sister Erin posted a photo of the McGregor clan from way back in the day and had the following caption:

“Just the 3 of us who knew Ud change r lives 4ever !! Surprise surprise the King never left how could I not learn from u ” u never doubted urself ” even when the world did u didn’t !! Now tat is something I aspire to be !!! Hard for me to sit tat one out but I was Defo there in spirit for all who txted and called and went to support him wow thank u , it made not been there a little easier !! Irish fans r truly the best !! Well done son I’m very proud of u for all uv achieved #teammcgregor #family #champ#stayready @thenotoriousmma”

Just the 3 of us who knew Ud change r lives 4ever !! Surprise surprise the King never left how could I not learn from u " u never doubted urself " even when the world did u didn't !! Now tat is something I aspire to be !!! Hard for me to sit tat one out but I was Defo there in spirit for all who txted and called and went to support him wow thank u , it made not been there a little easier !! Irish fans r truly the best !! Well done son I'm very proud of u for all uv achieved #teammcgregor #family #champ#stayready @thenotoriousmma

A photo posted by @erinmcgregor123 on Aug 23, 2016 at 6:22am PDT

Who knew that little guy would turn out to be one of the most successful mixed martial artists the sport has ever seen!