Some tonics I expect we will see:
Power ups. Lower energy cost on rolling/flying/stealth/etc. Gain more health from butterflies. Gain more energy from butterflies. Maybe one that makes certain moves free? There doesn't seem to be "eggs/feathers" so none of that, but you get the idea.
Some tonics I hope to see:
Useless ones! Big head mode. Turn into a household appliance. Rave Mode (laser lights and stuff everywhere?) or Rextro Mode (same crazy lights idea but with a Rextro theme).
Ideas for Toxic tonics?
Every enemy does double damage, every enemy splits in two when killed and must be re-defeated, always heavy (cannonball Yooka), controls reversed, controls flip 90 or 180 degrees every X number of seconds (control pad too).
Just some ideas.
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