Simon Pegg is a screenwriter .
Pegg portrayed Benji Dunn in the Mission : Impossible film series -LRB- 2006-present -RRB- and Montgomery Scott in Star Trek -LRB- 2009 -RRB- , Star Trek Into Darkness -LRB- 2013 -RRB- , and Star Trek Beyond -LRB- 2016 -RRB- , co-writing the latter .