The midfielder insists the 32-year-old's leadership skills are vital for the club and says the players are pleased the defender is staying at the Hawthorns for another season
The 32-year-old's previous contract was set to expire at the end of June before he committed to a one-year extension.
Reid made just 11 appearances in the Premier League last season, although Brunt insists the full-back's leadership skills are crucial to West Brom ahead of the new campaign.
“From the outside people don’t probably realise how much of an affect that [retaining Reid] has on the group,” Brunt told the club's official website.
“You know what you’re going to get from Reid. He’s a good leader and we need characters like that. He’s proved that over the last few seasons here. I’m sure everyone is delighted he’s staying.
“He’ll be looking forward to pre-season, getting himself fully fit and raring to go again.”
Reid made over 20 league appearances at the Hawthorns in each of his first two seasons after permanently signing from Blackburn Rovers in July 2010, and Brunt believes his team-mate will be looking to boost the number of games he features in next season.
Brunt continued: “I’m sure [Reid] was disappointed by the games he missed last season and will want to prove he is ready to play again.
“He looks after himself well, he’s usually the first one in and the last to leave from the gym.
“When he suffers set-backs it never seems to affect him – he just gets on with it. That’s the sort of attitude and character you need in the football club.
“And, at his age, he is someone to look up to.”