The fight against bioterror goes on: here are the characters we want to see on the frontlines.

Keith was briefly playable in Revelations' single-player campaign, and both characters were available in Raid Mode.

Despite that, he’s one of the series’most beloved charactersand an instantly recognizable mascot.

Resident Evil Duos Featured Split Image Leon and Ada & Rebecca and Billy

There’s more to a zombie apocalypse than the main campaign.

It’s all down to his survival skills, memorable design and sheer badassery.

Surprisingly, Sherry reappeared in Resident Evil 6 as a DSO officer.

The Chicago Typewriter and Handcannon from Resident Evil 4 and the Rocket Launcher from Resident Evil 5

Since then, Billy’s whereabouts have been unknown.

A game where he clears his name by fighting against bioterror would make for an interesting story.

The closest we got was a flashback mission where Parker and Jessica rescue Raymond as a rookie BSAA agent.

Pyramid Head and Nemesis.

Resident Evil heroes come in twos.

The post-credits scene of Revelations shows the two working together, but only begrudgingly.

Over a decade after Revelations, it’s time we learned more about the pair.

Split image of Sheva Alomar, Sherry Birkin and Raymond Vester from Resident Evil.

It’s never explained how he manages to show up the moment Leon’s wallet starts getting heavy.

Okay, so the merchant isn’t protagonist material.

Under AI control, Sheva is a bit of a drag, wasting first-aid sprays and requiring frequent rescues.

A split image of Ada Wong, Jill Valentine, and Sheva Alomar in the Resident Evil series

If you played the game co-op, though, she’s a helpful character with a unique left-handed stance.

Barring a Dead by Daylight cameo, Sheva has yet to re-emerge in her series of origin.

It’s time she left Chris’s hulking shadow.

Keith and Quint stand back to back in Resident Evil Revelations.

3The Kendo Brothers

If first impressions last, then why is Robert Kendo so likeable?

The Resident Evil series features some pretty unique weapons.

But these have stood out among the rest as the best in the games.

HUNK in Resident Evil 4 Remake: The Mercenaries

However, a gun crafting simulator through the brothers' perspective would make for illuminating fanservice.

Near the end of the game, Ashley suggests that she could become an agent like Leon.

If Sherry could toughen up and come back, so can Ashley.

Split image of tofu in the sewer and a wooden box

Then again, Resident Evil 4 is a game where you parry chainsaws with a knife.

Where did Wesker go after betraying Umbrella?

How did he learn about the Los Illuminados, and gather the resources to hire Ada?

Sherry Birkin talks with a distressed expression in Resident Evil 6.

When did he decide that complete global saturation was the only way?

A prequel game that answers these questions would help flesh out Resident Evil’s most popular villain.

A close-up of Billy Coen in Resident Evil 0.

Close-up of the merchant in Resident Evil 4 (2005).

Sheva from Resident Evil 5 looks up as she’s reloading a gun, a shotgun carried around her shoulder.

Close-up of a rain-soaked, distraught Robert Kendo in Resident Evil 2 Remake.

Ashley Graham looks ahead in Resident Evil 4 Remake.

A close up of Albert Wesker standing in a dark room in Resident Evil 5.

Triple-A Games