Fassad's horse. Also a fiend.
Fassad’s horse he met after using Find Steed. Apparently from a different plane, known as Ka’an. After using Divine Sense, it was revealed to Fassad that Papi is a fiend, although all other details remain unknown. Papi was desummoned by Fassad as he was in trouble. Fassad died days later in defence of Remeria. Papi’s fate remains unknown.