- Part of Tom's ToonTask requires a Whole Cream Pie to be delivered to Cleff. The reward is the ability to carry 40 gags.
- Judging by his accent, he could be Jamaican.
- At ToonFest 2017, Cleff was involved in a special activity called the duck tank. According to Riggy Marole, this activity was one of ToonFest's best prizes because it allowed Toons to gain revenge on Cleff for making Toons work hard to train their Throw track.