Electroplankton has its own stage in Super Smash Bros Brawl, it's proper name is Hanenbow.
You can unlock this by finishing Event 28 (Flower Blooms in the Echoes).
An artistic stage at heart, you won't be able to hear your own choice of music here. The Hanenbow are the pink things that move around the area, each time they hit a leaf a sound will be made.
Party like it's 1984.
You cannot harm me, for I am leaf.
Pacman used to be cool.
.. what are we doing here again?
You can sail the seven seas.
Living in 8-bit
A journey through the NES, SMS and GB
Wii U 5.1.0 System Update Released
Transfer data between separate consoles
Aonuma Talks New Zelda
Wants the next Zelda to be "vast"
Is There Too Much Fire Emblem in Super Smash Bros?
No, and here's why...
2014 Elite Status Gifts Have Been Announced!
Choose your game..
Cost's Two Cents: The Graphics Asymptote
How much better can we make our games look?
New Features in Pokemon Omega Ruby / Alpha Sapphire
And Pickachu takes up Cosplaying
Fire Emblem Awakening makes a Super Smash Bros splash
Lucina, Chrom, more and a special return guest
New Smash Bros. Character Reveal on Monday!
Posted on Japanese Nintendo Account
Smash Bros. Wii U & 3DS Playable 25th-27th July in London
Available to play at Hyper Japan 2014
Wii's World is not officially affiliated with Nintendo! (but they wish we were).