So I've decided to skip a few episodes but I'll give a rundown of what happed in each on with Ragnar ok
Downtime- Ragnar went to Asgard to spend time with his dads family
Bereft- he remembers the team but not why they are in the desert he finds Aqualad and finds him water
Targets- he help red arrow and Aqualad stop sportsmaster and the shadows
Terrors- he just waited for the team
Also I've decided on jade nguyen or Cheshire for the live interest