Ditto

The very first optainible shapeshifting pokemon, this pokemon can take any form it seesand copys the stats of the pokemon it transforms into and copy type as well, its ability is similar to the T-1000 ,able to change its form to a being or a puddle to blend in .its blob form is pink or purple the cells of ditto are far more unique than any evolutionary pokemon but it can have disorders that will affect its transformation ability like unable to change its face or its size

Trivia: it is the only pokemon that can breed with any pokemon except legendarys and itself for reasons unknown. Its transform attack can be copied by smeargle both pokemon might be related with mew scince mew can learn any attack including fly and transform.