Trunks helps Hippo is the second book in the Trunks Maloo series. In this book, Trunks and his friend, Baboon, find themselves in a difficult situation with Hippo, who is feeling quite grumpy. After a stroke of misfortune, Hippo desperately needs help and runs to Baboon. In a wonderful show of forgiveness and caring, Trunks and Baboon work together to help Hippo.