On 8/22/2021, using the media contact page information for Unilever (company that owns Good Humor), we sent a message to the general email address (consumer.services@unilever.com). Our message was to ask for assistance in contacting RZA as well as to ask if they would like to join our team and be part of the WuCream Truck momentum.
We will update this post if/when we hear something back!