Don't ask me why I did it, use:

"barneydinosaur, barney,"

As activation trigger.

To complement it use:

"anthro, biped, dinosaur, scalie, tyrannosaurus rex, purple body, green belly, fat, chubby, white teeth, black eyes, short arms, two fingers,"

"green spots, spots on back,"

"three toes, yellow claws, thick legs,"

"short tail,"

"mascot suit, plush costume,"