Terramagne's supervillains are more sane and organized than average. Put that many nerds together and they are bound to come up with all kinds of ideas in a range from good to bad to just plain flaky. Kraken isn't behind all the strange cereals but I know they've had their fingers in the bowl for some of them.

A few examples:

Happy Panda -- a cold cereal made of white rice chex with white tea powder, and black sesame balls with black tea powder. This is a caffeinated breakfast cereal.

Mocha Morning -- a cold cereal made from brown rice balls with cacao powder and coffee powder, plus hazelnut halves. This is a caffeinated breakfast cereal that is also high in sugar.
http://inabluemoon.net/index.php/2016/06/14/homemade-mocha-cereal-puffs/

Sencha Sunrise -- a cold cereal made from white rice chex and sencha green tea powder. This is a caffeinated breakfast cereal.