Krypto Cup (2b)

Franchise
Changeables
Product line
Drink cup
Promotion
McDonald's Happy Meal
Region
United States
Costume
Transforms between a Drink cup and a robot
Commonly missing
original polybag
Edition
Set 2b
Released
1989
Material
molded plastic
Series
1989 New Food Changeables

How to identify it

Set code 2b released in week 2 of four

Closed form is a Drink cup

Sources disagree whether the food subject is a soft drink cup or a shake cup. The conversion butterflies open.