Arrow Season 5 Finale: Ranking The Probability Of 17 Major Character Deaths In 'Lian Yu'

4. Captain Boomerang

Arrow Captain Boomerang
The CW

Captain Boomerang doesn't quite fit in thematically as well as the other returning faces, but given he was imprisoned on Lian Yu - and Oliver needs all the help he can get - it makes some sense to bring him back, even if it's unclear how much he can really be trusted.

It's likely that, of the villains coming back, Digger Harkness will have a relatively smaller role, but his tactical nous and combat skills should still make him an important part of the team - but he's also an expendable one. The character hasn't been seen in years, and wasn't a major villain the way Deathstroke was, meaning that there's no real reason to keep him around.

There are also rumours of a Captain Boomerang spin-off movie from Suicide Squad, so maybe this is a loose end Arrow needs to tie-up. It could let him walk free and just never be mentioned again, but if a few people are going to die, he's surely one of the favourites.

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