Elliss, 6 feet 3, 238 pounds, returns to New Orleans after being originally selected by the Saints in the seventh round (244th overall) of the 2019 NFL Draft out of Idaho. In seven NFL seasons with the Saints (2019–22) and Atlanta Falcons (2023–25), Elliss has appeared in 99 career games with 63 starts, recording 466 tackles (272 solo), 20.5 sacks, 37 stops for loss, 45 quarterback hits, two interceptions, 14 pass breakups, four forced fumbles, two fumble recoveries, and 15 special teams stops. Elliss also appeared in two postseason contests with the Black and Gold (2020).
In 2025, Elliss started all 17 games for Atlanta and finished with 107 tackles (59 solo), 3.5 sacks, 10 stops for a loss, 10 quarterback hits, one interception, six pass breakups (career-best) and forced one fumble. In Elliss' first tenure with the Saints, he appeared in 48 games with 12 starts, posting 87 tackles (47 solo), eight sacks, two pass breakups and two forced fumbles. In 2022, he enjoyed a breakout campaign, starting 11 of 17 contests and recording 74 tackles (41 solo), seven sacks, two pass breakups, and two forced fumbles.
During his tenure at Idaho (2014-18), Elliss developed into one of the most productive defensive players in program history. Elliss, a four-year starter and three-time all-conference selection, finished his college career with 289 tackles, 47 stops for a loss and 17 sacks in 42 games. A native of Salt Lake City, Utah, Elliss starred at Judge Memorial Catholic High School, where he was named Utah High School Athletic Association Most Valuable Player in 2013 after leading the Bulldogs to their first state championship in 30 seasons as the team's starting quarterback and defensive end.
Elliss comes from a prominent football family. His father, Luther, played defensive tackle for the Detroit Lions and Denver Broncos from 1995-2004. One younger brother, Christian, currently plays linebacker for the New England Patriots and another, Jonah, plays linebacker for the Broncos.