Complex sentence: He appeared in the 2016 superhero film' as Aquaman, and reprised the role in "Justice League" (2017) and "Aquaman" following in 2018, all of which are a part of the DC Extended Universe.
Split into simpler sentences: He appeared in the 2016 superhero film' as Aquaman, and reprised the role in "Justice League" (2017). He is set to reprise the role in "Aquaman" in 2018, all of which are a part of the DC Extended Universe.