Mari was the host of the original Smosh Pit Weekly, a weekly show that focused on the various images, videos, and articles found in the Smosh Pit on the Smosh website. She rarely appears on videos uploaded on the main Smosh channel but is the third most associated member of Smosh, only behind Ian and Anthony. August 22, 2015 was the last Smosh Pit, after running for 4 years and 4 months and having 227 episodes. A revamped Smosh Pit Weekly series with her was created nearly two years later. As well, she is now a veteran member of Smosh Games, appearing as part of Smosh Game Bang as well as on her own show, Maricraft (Formerly called Super Mari Fun Time).
Mari's main profession is a ballet dancer, as explained in one of her Smosh Pit Weekly episodes. This explains her flexibility in her audition. She sometimes goes on tour with her group, as seen in two Smosh Pit Weekly episodes where she filmed in her hotel room. According to her own YouTube channel, Mari has uploaded exerpts of four of her performances. Her videos include her performances for Giselle, No Place to Rest, Musume, and the Nutcracker Suite. Mari also enjoys rock climbing. According to some pictures, she has been known to climb some slopes without a harness. She also loves traveling, as seen in some of her pictures. According to a Smosh Pit Weekly episode, she always takes her traveling buddy, a monkey doll she calls Silvio, along. She also takes home souveniers that are made of dead animals, a monkey skull being an example.
Survivor: Millennials vs Gen X
On May 18, 2016, it was announced that Mari would be participating in the 33rd season titled Millennials vs Gen X. She would be the first one to get kicked off at her team, Millennials. Many fans and viewers of her were disappointed and disagreed with the decision.
The season took place in Fiji.