Erik was an Other that confronted Sawyer, Kate, and an injured young Ben in the jungle in 1977. He agreed to bring them to Richard. He also expressed a concern about healing Ben, saying that they should check with Ellie and Charles. ("Whatever Happened, Happened")
Ellie decided to bring him on Jack's mission to retrieve the Jughead. While trekking to the bomb's location, Erik was shot and killed by Sayid when he attempted to stop Kate from leaving. ("Follow the Leader")
- The casting call described Erik as "late 20s to 30s. Any ethnicity. Smart and dangerous. Tough military type. Follows orders and doesn’t question them. He is a loyal soldier." 
- Erik was wearing a red shirt when he was killed by Sayid.