'Arrow' Season 2 Finale Spoilers: Red Arrow, Suicide Squad, Black Canary, League of Assassins in Team Arrow vs Deathstroke; Plus Olicity Moments [Watch Promo Video]

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Actor Stephen Amell Arrives at the 2014 People's Choice Awards in Los Angeles
Actor Stephen Amell arrives at the 2014 People's Choice Awards in Los Angeles, California January 8, 2014.

The "Arrow" Season 2 finale airs May 14 on The CW. Fans of the DC Comics-inspired series are expecting a lot of action in "Unthinkable." Spoiler photos reveal an expanded Team Arrow against the Mirakuru-enhanced Deathstroke. "Spartacus" stars Manu Bennett, Katrina Law, and Cynthia Addai-Robinson are all on board. The promo says, "Kill or Be Killed."

Spoiler alert: This feature contains spoilers on the Arrow Season 2 finale. Read at your own risk.

In Arrow Season 2, Episode 23, Oliver Queen has to save Starling City from both A.R.G.U.S. and Slade Wilson aka Deathstroke (Manu Bennett). Slade goes after Felicity Smoak (Emily Bett Rickards). Felicity hitting Isabel Rochev aka Ravager (Summer Glau) with her van clearly has some consequences.

The Olicity (Oliver and Felicity) moments in Arrow Season 2, Episode 22 are expected to extend through the finale. That Slade Wilson has Felicity instead of Laurel Lance says a lot about how strong the Olicity bond has become.

Roy Harper aka Red Arrow (Colton Haynes) may have been cured from the dark side effects of Mirakuru. The young sidekick is hooded up in the latest spoiler photos. Standing with The Arrow, Nyssa Al Ghul (Katrina Law) and Sara Lance/Black Canary (Caity Lotz), Red Arrow is ready for big trouble in the name of heroism.

Spoilers in still photos from the Arrow Season 2 finale are compiled in this YouTube video. The Suicide Squad composed of Deadshot (Michael Rowe), Bronze Tiger (Michael Jai White) and perhaps Harley Quinn (possibly Cassidy Alexa) are on Team Diggle versus Amanda Waller (Cynthia Addai-Robinson) of ARGUS.

John Diggle (David Ramsey) teams up with ex-wife-now-girlfriend Lyla Michaels/Harbinger (Audrey Marie Anderson) and the Suicide Squad. They want to make sure ARGUS does not blow up Starling City in order to contain Deathstroke's Mirakuru army. This is a crucial part of the Arrow 2x23 action.

While the Suicide Squad is with Dig, Nyssa Al Ghul's League of Assassins is with Oliver Queen. Nyssa and the Black Canary will be facing off with Ravager, too. The Arrow Season 2 finale is looking like an all-heroes cast in spoiler photos.

Amid all the Starling City chaos, Thea Queen (Willa Holland) runs to Roy Harper for help. In Arrow Season 2, Episode 22, Thea shoots Malcolm Merlyn (John Barrowman). Speedy may have not killed her father, but she does need help anyway.

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It remains to be seen whether Malcolm Merlyn will be suiting up as The Dark Archer on the side of the League of Assassins and The Arrow. Moira Queen dies in Arrow Season 2, so perhaps Merlyn would survive - if only for Barrowman's brilliant acting skills and some redemption for Thea's dad.

Laurel Lance (Katie Cassidy) gets strangled by one of Slade Wilson's Mirakuru men. Perhaps the Black Canary will save her. However, there are speculations that Sara Lance dies in this episode. Stephen Amell promotes Arrow 2x23 as a phenomenal TV production. A lot is going down in so little time.

WATCH: Arrow Season 2, Episode 23 ('Unthinkable') Promo Video

The CW has officially approved Arrow Season 3. Fans will agonize for months over the Season 2 cliffhangers, but there is consolation in the guarantee that the series will return for its third year.

More Spoilers and TV Guide Features

'Arrow' Season 2, Ep 22 Spoilers: Deathstroke, Malcolm Merlyn, Black Canary, Oliver Queen and Questions on Penultimate Episode [Watch 2x22 Promo Video] 'Castle' Season 6 Finale Spoilers: Stana Katic as Kit Kat, Nathan Fillion Live Tweets with Eddie McClintock [Watch Promo Video]

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