The Vancouver-born Bezzoubenko, who grew up in Moscow and holds Russian citizenship, won the individual all-around title and led Canada to a victory in the team event.
Gunning for a gold-medal sweep on Saturday, the 17-year-old won golds in three apparatus — hoop, ball and clubs — before finishing third in the ribbon.
"Nobody's perfect. . . I am proud," Bezzoubenko said. "This is my life and my accomplishments. I feel amazing, here at my first Commonwealth Games. I am happy for my country and my coaches. So happy to compete for Canada."
Bezzoubenko trains with members of Russia's national team in Moscow where she lives with her parents. The five-foot-four gymnast has competed for Canada for the past five years, ever since a Russian coach pointed her out to Svetlana Joukova — her Russian-born Canadian coach.
Bezzoubenko lived in Vancouver until her parents returned with her to Moscow when she was four. She lists Thornhill, Ont., as her hometown.
She was attempting to match the mark set by Canada's Alexandra Orlando, who swept all six gold medals eight years ago at the Commonwealth Games in Melbourne, Australia.
"I did my work and didn't think about medals; this was a good performance for me," she said.
Bezzoubenko is a three-time Canada junior champion and won the national senior title the past two years.
Elsewhere, Canada won swimming silver in the women's 4x200-metre freestyle relay, with Montreal's Samantha Cheverton, Toronto's Brittany Maclean, Alyson Ackman of Pembroke, Ont., and Emily Overholt of West Vancouver, B.C., finishing in a combined time of 7:51.67.
Australia took gold with a time of 7:49.90, while England won bronze in 7:52.45.
Toronto's Des Vamplew and Jim Paton of White Rock, B.C., won silver in the men's fullbore rifle pairs events. England won gold in that event, with Scotland taking bronze.
Ana Laura Portuondo-Isasi, from La Prairie, Que., jointly won bronze with Cameroon's Hortense Mballa Atangana in the 78-kilogram category of women's judo. Wales's Natalie Powell beat England's Gemma Gibbons to win gold in the event.
Canada's team of Kirsten Sweetland, Matt Sharpe, Sarah-Anne Brault and Andrew Yorke placed fourth in the mixed-gender triathlon relay with a time of one hour 14 minutes 17 seconds.
England grabbed the gold with a time of 1:13:24. South Africa surprised the field with a silver medal at 1:14:13, while Australia edged out the Canadians for the bronze after clocking a time of 1:14:14.