The popular player, known as Wally, has racked up 10 years of service with the Giants and even became the first person from Northern Ireland to play for Team GB.
"The club and all the supporters have been brilliant to me over the last 10 years and I can't thank them enough," he told UTV.
During his tenure, the 31-year-old helped his side to two league titles and a playoff championship.
It'll be emotional to walk away ...
He announced his retirement following a testimonial at the Odyssey Arena, which saw a host of fan favourites return to play for Walton's Allstars against the Giants.
The upcoming playoff finals in Nottingham this weekend will see his last games in a Giants shirt.
"I've had manys a good night at the Odyssey, but I think this one will be the most special in my 10th year," he said.
"I will be down in the future to watch them - I'll always be a supporter. It's been great."