General Mills' "Batman v Superman: Dawn of Justice" themed cereals are on supermarket shelves now, and the breakfast giant is asking fans to make their choice wisely when adding it to their shopping lists.

"Superman Caramel Crunch" and "Batman Chocolate Strawberry" are both available for a limited time, and fans are asked to support their favorties on social media with the hashtags #supermancereal and #batmancereal. The Man of Steel's cereal is shaped like the hero's "S" shield, while the Dark Knight sugary morsels are bat-shaped.

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"We spent extensive time and effort to develop the flavors and look of these cereals, and their packaging, so that they will match the incredible quality of the characters they feature," says Alan Cunningham, senior marketing manager, Cereal Innovation, at General Mills.

"Batman v Superman: Dawn of Justice" opens on March 25, 2016.