He has been quoted as saying that Metallica, Slayer, Judas Priest, Testament, Mötley Crüe, Pantera, Iron Maiden, and Racer X were his strongest influences.

[citation needed] On August 31, 2005, before the set closed, frontman David Draiman handed the microphone to Wengren, who invited his girlfriend onstage and proposed marriage to her.

[1] In 2013, Wengren pursued a side project band, Fight or Flight, in collaboration with Disturbed member Dan Donegan.

In recent years, Wengren has appeared in advertisements for Pearl Drums, since the Masters Series was his first professional kit purchased from Midwest Percussion the early 1990s.

Wengren's tour kit in support of the album Ten Thousand Fists was a 'vintage sunburst' variation of the same drumset, also with black hardware.