Monjuin is a small temple located right next to Myo-oin on Wakasugi Mountain in Fukuoka. At first I thought it was ust part of Myo-oin. What little I have been able to find out about it is a little confusing, but it is probably a fairly new temple.
It is a Shingon temple, and part of the 24 temple Jizo Pilgrimage of Kyushu, which is who I think the first statue is. There was a shrine to Benzaiten as well.
The figure on the right is certainly Kannon, and the middle one Jizo
Not sure who the three-headed figure is,... there are three headed Buddhas, three headed Kannons, as well as various other deities/boddhistavas, etc
There were statues of the 7 lucky gods, and also another statue of Daikoku.....