Pancho Pantera is a mexican mascot for a chocolate milk powder called "Choco-Milk" yes, yes it is, and it was actually delicious, i remember drinking it a lot when eating refired beans and flour tortillas when i had an iron deficiency when i was a pettite little boy, now i'm an adult fat f**k, and is from around the late 60s to this date.
https://www.google.com/search?q=pancho+pantera&sxsrf=ALeKk003ksUPh11i9k2PcQ8dcoADjnw-ZA:1594149768884&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiln8XV7rvqAhW8JjQIHSypDawQ_AUoAXoECD4QAw&biw=1920&bih=888