In fact, he probably shouldn't even be called a defensive end.
The way Packers coach Mike McCarthy explained it to reporters on Tuesday at the NFL annual meetings in Orlando, Fla., the newest addition to the Packers' defense will play a hybrid position -- a combination of an outside linebacker and defensive lineman the Packers will call an "elephant."
It's a spot that McCarthy first revealed during an interview at the NFL scouting combine last month that was in his plans, well before he knew he would have Peppers on his roster.
In preparing for that role, Peppers will spend most of his individual practice time and meeting sessions with the linebackers, who were merged into one group under assistant head coach Winston Moss and position assistant Scott McCurley following the resignation of outside linebackers coach Kevin Greene shortly after last season ended. It also means Peppers will not work directly under defensive line coach Mike Trgovac, who was Peppers' defensive line coach and defensive coordinator with the Carolina Panthers from 2002-08.
"Elephant is a term used for a multiple-position player along the defensive front," McCarthy told reporters at the league meetings. "Julius will be part of that group.
"The specifics I'd rather get into once the players find out, once we go through it with the players, but that's the big-picture outlook for the way we'll use Julius defensively."
In his only public comments since he signed with the Packers, Peppers, who was released this month by the Chicago Bears, told the Packers' web site he expected his role to be "something different" than it was during his stint with the Bears.
This would qualify as such.
Even before the Packers signed Peppers to a three-year, $26 million contract on March 15, they had planned to use the elephant position for Mike Neal and Nick Perry. In some defenses, the elephant position is used to describe an end who lines up between the offensive tackle and the tight end (in what is called the 7 technique) but based on McCarthy's comments on Tuesday, it appears he has multiple positions in mind for his elephants.
Perry, a former first-round draft pick, was a defensive end in college but switched to outside linebacker with only moderate success the past two years. Neal played his first three NFL seasons at defensive end before he switched to outside linebacker last season.
The trio of Neal, Peppers and Perry could be interchangeable this season.
"It's not only your position, your alignment, it's your assignment," McCarthy said. "So he has more to offer in his opinion, and I agree with him, from an assignment standpoint. So where he aligns, competing against Julius, he's lined up on both sides at defensive end. He has been an inside rusher, so those experiences he already has and will continue to do so."
The addition of Peppers and the redefinition of some positions could make coordinator Dom Capers’ defense look a lot less like the traditional 3-4 he has run throughout his 28-year NFL coaching career. But McCarthy said Capers' defense has evolved into a two-linemen look more than ever to combat the spread offenses used so prolifically around the league.
"How much 3-4 defense do we play?" McCarthy said. "We've been averaging 24-25 percent over the past five years. So we're playing so much sub."
When the Packers do use their base defense, McCarthy confirmed that recently re-signed lineman B.J. Raji will return to his old position, nose tackle. Raji played more at defensive end the past three seasons, when his productivity waned. McCarthy said the plan for Raji will be to "cut him loose."