I've been thinking about a Nine Elements/BIONICLE (MNOG) crossover. If it were to be animated, here's the possible cast list:

Nine Elements characters

• Sunset Shimmer: Rebecca Shoichet
• Twilight Sparkle: Tara Strong
• Spike: Cathy Weseluck
• Applejack and Rainbow Dash: Ashleigh Ball
• Pinkie Pie and Fluttershy: Andrea Libman
• Rarity: Tabitha St. Germaine
• Starlight Glimmer: Kelly Sheridan
• Trixie Lulamoon: Kathleen Barr

BIONICLE (MNOG) characters

• Takua: Jason Michas
• Kapura: Vincent Tong
• Macku: Kira Tozer
• Hafu, Kongu, and Teridax: Lee Tockar
• Tamaru: Richard Ian Cox
• Kopeke: Brent Miller
• Taipu: Brian Drummond
• Tahu and Onua: Scott McNeil
• Pohatu: Trevor Devall
• Gali: Kathleen Barr
• Kopaka and Hewkii: Michael Dobson
• Onewa and Lewa: Dale Wilson
• Vakama: Christopher Gaze
• Nokama: Lesley Ewan
• Matau: Ian James Corlett
• Whenua: Paul Dobson
• Matoro: Doug Parker
• Jaller: Andrew Francis
• Onepu: David Kaye
• Ahkmou: Brian Dobson
• Midak: Michael Adamthwaite

7946349
How would you do the crossover?

7946377
I haven't thought about that.

I thought you were already doing TMNT and Pokémon crossovers.

7946844
I have other ideas, too.