Blast Radius

A bomber nicknamed Shrapnel has set his sights on Sebastian Blood, and Oliver dons his mask to protect his newfound ally. Meanwhile, Laurel investigates Sebastian's aunt who is locked up in a mental institution, and Thea learns about Roy's newfound superstrength.

Caity Lotz

Sara Lance

Dylan Bruce

Adam Donner

Sean Maher

Mark Scheffer / Shrapnel

Marty Gage

Gary

Paul Lazenby

Thug

Claire Lindsay

Businesswoman

Annabel Kershaw

Middle Aged Woman

Dylan Neal

Dr. Anthony Ivo

Jesse Hutch

Officer Daily

Ana Mercedes

Maya Resik

Janet Glassford

Nurse

Kevin Alejandro

Sebastian Blood / Brother Blood