Rakan, sometimes referred to by their sanskrit name of Arhat, are generally considered to be disciples of the historical Buddha, and in Japan are often found collectively as a group of 500 statues.
One of their features is that every single face is different with a different expression, and that you will be able to find at least one that reminds you of someone you know.
In the rakan hall of Jizoji, temple number 5 of the Shikoku Pilgrimage, there are nowhere near 500 of them, but they are unusually large.
On my first morning walking the Shikoku Fudo Myo Pilgrimage I started at Jizoji before heading up the mountain to the first Fudo temple.