Finder Guy is an adorably chunky, dual-toned blue creature with a rounded head and a perpetual smile. Apple is being fairly tight-lipped about him; he hasn't been officially announced or acknowledged by the company.
VOID stands for Video Object and Interaction Deletion. It's a VLM (vision-language model) that can not only erase objects from a scene but can also inpaint how remaining objects in the scene should behave without the influence of whatever was excised.