I get why a Captain Underpants movie was made. The climate is pretty much as ripe for superhero parody as it's ever going to be, Captain Underpants has enjoyed moderate achievement in terms of being a household name, I even remember more or less enjoying the books as a kid. But Captain Underpants: The First Epic Movie is pretty bad. Not in any unexpected ways, it's reasonable to expect a certain level of humour from a film whose titular hero has "Underpants" in the name, but in my honest opinion, The "First" Epic Movie, should probably be the last one too.
Final rating:★½: - Boring/disappointing. Avoid where possible.