Hotel Transylvania 3: Summer Vacation does not feature any identifiable LGBTQ+ characters or themes. The story centers on heterosexual romance and family dynamics, resulting in no depiction of queer identity to evaluate.

Hotel Transylvania 3: Summer Vacation does not feature any identifiable transsexual characters or themes. The narrative focuses on monster family dynamics, a cruise vacation, and Dracula's search for love, without engaging with gender identity issues.

The film features female characters like Mavis and Ericka who participate in action sequences. Mavis, a vampire, uses her inherent powers against a giant monster. Ericka, a monster hunter, primarily uses traps and gadgets in her attempts to defeat male characters. No female character is depicted winning a close-quarters physical fight against one or more male opponents through skill or martial arts.

The film is a sequel where all returning legacy characters maintain their established genders. New characters, such as Ericka Van Helsing, are original creations for this installment and do not represent gender swaps of previously established figures.

The film features established animated characters whose racial depictions remain consistent with prior installments. New characters introduced do not have a pre-existing canonical race to be swapped from.