Griffin (later going by the name Bulldog) is the main protagonist of the 2018 animated film, Bulldog the Flea.
When Griffin first appeared, he appeared to be a very irrational, short-tempered, grumpy, selfish and hostile creature, especially to his own servants, who wants to bit Bulldog and steals his blood. He also found himself in conflict with his hideous exterior, making him an insecure person in nature, even despising his abusive father, Dr. Liquor, for raising him to become a mad scientist.
Later, he is actually calm, gentle, cowardly and dim-witted, especially for saving his girlfriend and his friends from Vampire, as the latter confirms himself as the true murderer of Dr. Liquor.