Although most Hybrids grow up in Reticulan communities, their human genes are still there and constantly affect every individual in countless subtle ways. Since their gene pool is so diverse, this can take many forms and is more pronounced in some specimens than in others. Therefore, Hybrids have (potentially) full access to both their legacies, alien and terrestrial, in equal measure. If trained properly, this allows them to mentally switch between their human-like and Reticulan-like selves, depending on which is needed. They present different and conflicting world views and ways of thinking, so they cannot coexist, unless perhaps in some venerable sage's big head.
In practice, this means that our Bugeyes (trained by Nunity in this art) gain access to some outfits categorized as stemming from either Human or Reticulan nature.