The man behind Rockets' Clutch calls it quits after 21 years

HOUSTON – The Houston Rockets are looking for a new Clutch the Bear. Robert Boudwin, the man behind the Houston Rockets mascot, is retiring after 21 years of entertaining Houston.

Boudwin announced his retirement July 22.

"With mixed emotions and a heavy heart, it is time for me to say goodbye to my alter ego of 21 years and 'best friend in fur' Clutch the Bear, Mascot for the Houston Rockets," Boudwin wrote on Facebook.

Boudwin is expanding his family, with another set of twins on the way for him and his wife. They have a girl and a set of twin boys, who have participated in many of his performances. He wants to spend more time with his family and growing his new business venture.

"I will be taking a brief period of time off to focus on our baby girls' birth and care, but am eager to pursue the next chapter of my career," Boudwin wrote.

The Rockets organization recruited Boudwin in 1995. Since then, he has performed in more than 1,000 games.

[WATCH: Funny moment between KPRC 2 Meteorologist Britta Merwin and Clutch]

Clutch was all about pumping up the crowd and keeping them engaged in the game.