Fleenflel, also known as "The Mighty Trunks", is a completed semi-canon mini-campaign (homebrewed) DMed by Derek about the story of "The Mighty Trunks" as they take part in the 42nd Grand Fleenflel Prime Material Plan Championship, set in the city of Galtica (located on the Avantris continent of Yona). The title of this one-shot originates from Derek using a English to Celestial translator for the words "Sports Ball". In addition, the Fleenflel subsystem was created by Derek. This is the precursor series to the one-shot series Cuttlefish Sweepstakes. The placement of this mini-campaign in the timeline of Avantris is everchanging.