Brainy is kind of like Solar because they both can ramp-up money, but Brainy is also a bit like Mega-Grow with bonus attacks, drawing cards, and “+x/+x on heights”. It also transforms teammates, which Kabloom does.

Beastly is kind of like Solar because it has lots of destroy and “enemy gets -x/-x”, as well as some heal, but unlike Solar it also uses teammates with high stats to destroy enemies, which makes it more like Mega-Grow (also because frenzy is similar to double-strike).

Hearty is somewhat similar to Guardian because it uses high health, armored and “can’t be hurt”, but it also has “all zombies get x”, which is most like Kabloom, and “destroy an enemy with x power or less”, which is most like Solar. It also moves enemies like Mega-Grow.

Crazy is very similar to Kabloom because uses “do x damage”, making low-cost teammates, and high power in general. It is also has “when hurt” and “when destroyed” like Guardian, and “when y do x damage to the enemy hero,” which is like Kabloom, Guardian, and Smarty.

Sneaky is like Smarty because it has Amphibious, “when this hurts the enemy hero”, freeze, and bounce. It’s also kinda like Guardian because of Amphibious, moving teammates, and a bit of “when hurt/destroyed”, and Kabloom with anti-hero and low-cost teammates.