Rate The Mumm Brothers's Acting Performance in Xanadu (1980)

This page allows users to rate an acting performance by The Mumm Brothers in Xanadu (1980) using ActorRating's 0-10 performance rating system based on five Oscar-inspired criteria. Our rating methodology evaluates the craft of acting independently from the overall film quality.

Rate this acting performance across five professional criteria: Emotional Range & Depth, Character Believability, Technical Skill & Authenticity, Screen Presence & Impact, and Chemistry & Interaction. Each criterion is scored on a 0-100 scale internally, then averaged and converted into a final score out of 10 for clarity and consistency. Your performance rating will contribute to the community's aggregated score, helping identify career-defining roles and overlooked performances.