MERRY CHRISTMAS!
The Tree Man I Just made up but the other two figures have a history. First is the Flatwoods Monsters was supposedly seen on September 12, 1952 in the town of Flatwoods, West Virginia. It was introduced in to Japanese culture by Hiroshi Minamiyama, a science fiction editor and occult writer. The translation comes to “3-meter alien”.
The rightmost figure in Umibozu, a spirit from Japanese folklore. It lives in the ocean and will capsize your ship if you speak to it!
To quote Wikipedia: This spirit’s name, which combines the character for “sea” with the character of “Buddhist monk,” is possibly related to the fact that the Umibōzu is said to have a large, round head, resembling the shaven heads of Buddhist monks. Alternatively they are enormous Yōkai (spectres) that appear to shipwreck victims and fishermen. They are believed to be drowned priests, and exhibit the shaven head and typically appears to be praying. It is usually reported as having a grey, cloud-like torso and serpentine limbs.
According to one story, if angered, they ask that the crews provide a barrel that it proceeds to fill with sea water to drown them. To avoid this disastrous fate, it is necessary to give him a bottomless barrel.