GrandChase is giving away a free SR character - the Angel of Valor, Callisto. Pre-registering for the mobile RPG's latest update rewards players with the SR Rank Hero, and you can sign up from now until October 25th to secure your new Assault unit.

Callisto is a welcome addition to the GrandChase family as she protects her allies and deals devastating damage to foes at the same time. As a frontline unit, she can deploy shields that help reduce incoming damage, as well as cast debuffs that weaken foes. She can also buff herself and her partymates to boost the damage of her battle axe, Alioth.

During the pre-registration event for the newest 5-Star SR Rank Assault Hero Callisto, a code will be given out to everyone who signs up via their registered email. After the Callisto Update rolls out on October 19th, players can then claim the Hero in the game. If you're eager to score a guaranteed Callisto unit, you can pre-register for the character now on the official website.

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Players can also score vouchers for Wizard’s Labyrinth, Annihilation, Defense Mode, and Wanted during the Pre-Release Event. All you need to do is log into the game from October 12th to October 19th. You can also nab a special Callisto chat emoticon after logging in for all 7 days, and get a chance to win cute Avatars until November 2nd.

GrandChase is available to download on the iOS App Store or on the Google Play Store for Android devices. It's a free-to-play game with in-app purchases. You can also have a look at the teaser trailer for Callisto embedded above to get a sneak peek of the new character in action.

If you're on the hunt for more JRPGs on your mobile device, why not have a look at our list of the top 25 best JRPGs for Android phones and tablets?