A 6-foot-10-inch (2.08 m), 231-pound (105 kg) center, he played at three different high schools in the Los Angeles area and was ranked as one of the top recruits in his class.

He was prohibited from competing in college after failing to meet academic requirements, choosing to immediately turn professional in 2013.

Pelle has played in the NBA for the Philadelphia 76ers, Brooklyn Nets, Sacramento Kings, New York Knicks, and Utah Jazz.

[3] As a sophomore, Pelle transferred to Manuel Dominguez High School in Compton, California, playing under head coach Duane Cooper.

[6] He moved to Frederick K. C. Price High School in Los Angeles but was sidelined for his junior season due to transfer rules.

Despite his absence, the team won the CIF Southern Section Division 4AA championship, led by Allen Crabbe and Richard Solomon.

[8][9] Despite his success on the court, he struggled in the classroom, achieving only a 2.6 grade-point average and failing to meet college entrance exam requirements two times.

[3] After joining St. John's at the NCAA Division I level, he was ruled ineligible for taking summer classes at Northeast Preparatory School in Philadelphia.

[18] Pelle had a notable performance in December 2014 versus Kinmen Kaoliang Liquor Basketball, posting a double-double of 27 points and 26 rebounds.

[19] He was named to the SBL All-Star Game and earned All-SBL honorable mention accolades from basketball website Asia-Basket.

[24] Pelle joined the Miami Heat of the National Basketball Association (NBA) at the 2016 Orlando Pro Summer League.

[15] On July 28, 2016, Pelle signed a two-year contract with Pallacanestro Varese of the Italian Lega Basket Serie A (LBA).

[25] Upon his arrival, head coach Paolo Moretti said, "The qualities of Pelle that have most impressed me are his explosive strength, aggressiveness and athleticism.

[26] After the season concluded, Pelle competed for the Philadelphia 76ers at 2018 NBA Summer League in Las Vegas, averaging 7.4 points, 4.2 rebounds, and 1.2 blocks per game through five contests.

[30] On March 30, 2019, Pelle signed with Homenetmen Beirut of the Lebanese Basketball League for the remainder of the season.

[55][56] He debuted for them at the 2017 FIBA Asia Cup, averaging 9.3 points, 5.0 rebounds, and 4.0 blocks per game, en route to a 6th-place finish.