String theory generically predicts an “axiverse” of O(100) axion-like particles, spanning a vast range of masses (roughly 50 orders of magnitude). If the Pecci-Quinn Symmetry breaks before or during inflation, these axions, if not directly driving inflation, are present as scalar spectator fields throughout. While much recent attention has focused on ultralight axions as dark matter candidates, heavy axions nearer the GUT scale are equally well motivated, arising naturally for instance in KKLT. Axions at the heavy end of the axion mass spectrum are still light relative to the Planck scale and sit near the inflationary Hubble scale, thus they are present as subdominant, light scalars without direct couplings to the inflaton, whose cosine potential cos ϕ reduces to a simple 1/2 m^2ϕ^2 near the minimum, valid when ϕ << fa (and Hinflation < fa). I will connect this simple fiducial model for the axion-like spectator to the production of primordial black holes (PBHs) by demonstrating a novel formation mechanism for PBHs from inflation. PBHs are known to result from single-field inflationary models that experience a transient period of Ultra-Slow Roll (USR) inflation, but such models typically require a high degree of fine-tuning. I will show how a scalar spectator, when added to a would-be single-field USR model of inflation no longer enters USR but instead generates large power spectrum enhancements while significantly reducing the degree of fine-tuning of the model (sans spectator). I will explicitly demonstrate the remarkable resilience of this inflationary mechanism to parameter variations.