Bluey-Like is a small ghost, but has 150 heart power and does MASSIVE damage. His tactics to defeat him is massively tricky and mostly difficult.
The trickyness about it is the aiming of his ice monster. Really tricky because his shield is tiny. Bluey-Like is the boss encounter in the Fictonal Mount. Luigi would faint in about 3 minutes.
His attacks takes 40% dagmage off your 200% life.