The Room of Portals

As you emerge through the portal, you find yourself floating in a formless void. Actually, floating is probably not a good word to use here. You're definitely walking, but there is no floor underneath you, only a swirling mass of gray.

Surveying your surroundings, you see several archways arranged in a large circle. Many are dark and lifeless, nothing but gray stone and emptiness. But there are a few alive with portals swirling within their depths. Each portal has it's own distinct color and some words and/or a symbol carved in the stone above it. These portals are the only ones breathing with life:

Sonic the Hedgehog
Rescue Rangers/Protection Force
Scuba Fights
Gummi Bears
The Poetry of Robert Brown
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