Comic-Con is known to be the place to be for those who eat, sleep and breathe superheroes. Warner Bros. is determined to make its mark on the second of those three.

For the seventh year in a row, Warner Bros. Television and Warner Bros. Home Entertainment have announced that hotel room keys at the San Diego-based convention will be bedecked with an images from their shows. This year’s crop include Warner Bros Television series “Arrow,” “The Flash,” “Supergirl” and “Gotham” and Warner Bros. Animation series “Teen Titans Go!” The “Teen Titans Go!” cards will include a special Comic-Con-only QR code that will enable guests to watch a free episode of that series.

The cards promote the returning series’ debuts on Blu-ray and DVD, lest anyone get draw conclusions from Jada Pinkett Smith’s placement on the “Gotham” card. “Gotham” season one will be released on Blu-ray, DVD and Digital HD on September 8, while “The Flash” season one and “Arrow” season three will be released in those formats on September 22.

All of these shows, as well as several more Warner programs, will also host Comic-Con panels over the weekend.

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