It looks like he is one confused, mentally ill young man.
Who is Arcan Cetin? The Shocking Clues from Facebook, Twitter, and his Writing
Arcan Cetin's reported Facebook reveals a lot about the man. He seems relatively popular, with several friends of many different ethnicities. He likes cars and apparently likes the military, U.S. Navy, and Navy Seals.
Here's a picture of Cetin from his reported Facebook (there are several others there as well):
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http://emptylighthouse]
On his reported Twitter, which hasn't been recently updated, Cetin mostly talks about random thoughts, including this political one:
Country is for Republicans and confused Democrats.
— Arcan (@ArcanCetin) April 22, 2015
Cetin also reportedly has a Myspace (yes, that still exists). On it, he appears to post photos of himself with guns, and writes this interesting comment: "ME AND MY UNCLE'S (LEFT) M16. No gay comments yes I was "fat" Cmon i lost 50 pounds. I'll take a new picture..Soon" He posts other homophobic comments on other sites as well.
Here is one of the Myspace photos showing what appears to be him with a gun:
[
http://emptylighthouse]
Arcan Cetin's reported Youtube is mostly about Call of Duty, a video game; his "likes" on Youtube include gun videos, gaming videos, and a bong cleaning video.
Cetin seems to have two different Tumblrs: one seems to show an obsession with serial killers and has a Confederate flag. The other discusses Mein Kampf, has another Confederate flag, and has this picture of the leader of Iran:
https://id%3D124022857161%3Bname%3Dmeowfraulein
It also calls the head of ISIS "my main dude":
https://id%3D122904253216%3Bname%3Dmeowfraulein
Arcan Cetin: Education/Job
According to his reported Facebook, Arcan Cetin was previously a bagger at Whidbey Island Commissary in Oak Harbor. The commissary is known for serving the armed forces. He was also a member of ROTC in high school.
He attended the local high school, Oak Harbor High.
Someone who claims to know him alleges that this is Cetin's Call of Duty account. He also says that Cetin played an anime dating simulator.
@KEEMSTAR the @ArcanCetin shooter from Canada played Cod after the shooting and he also played a anime dating simulator frequentlypic.twitter.com/xOrK2GUpJn
— Jamz (@jamzgoeshamz) September 25, 2016
Arcan Cetin: Criminal History
Regarding his criminal history, according to USA Today:
Cetin was involved in a number of cases in recent years, according to the Washington court database.
Cetin has faced three assault charges related to domestic violence, the Seattle Times reported. They involved his father.
A judge told Cetin Dec. 29 he could not possess a firearm, the Times reported. His stepfather convinced the judge not to include a no-contact order because Cetin was "going through a hard time."
Cetin also has an arrest on a drunken driving charge, the Times reported.
A woman named Uhlaine, who claims to have gone to Cetin's high school, has accused him of sexual harassment/assault on Facebook: