Smash: The Series/Begin!

(YouTube trailer shows as it pans to Bowser, King Dedede, Wolf O'Donnel, King K. Rool and Ridley in the same room as they are confused)

Bowser: Which of you fools summoned us?

King Dedede: Not me!

Ridley: I don't think any of us brought us together.

???: I did.

(Thunder strikes, revealing Ganondorf)

Ganondorf: Excuse me for my sudden appearance.