Sometimes, people look familiar. You know you've seen them before. Maybe they look like a friend from college. Or an animal. Or an electrical appliance. In the West, there are websites such as Totally Looks Like that compare images which... totally look like each other.
On web forums, Japan does the same thing, finding images that look the same. In Japanese, the images are dubbed "kanzen ni icchi" (完全に一致) or a "complete match."
Often, below or on these comparisons, the words "kanzen ni icchi" (完全に一致) appear, but not always.
Because these comparisons are appearing on Japanese sites, the subjects are often Japanese celebrities or newsmakers. The point of reference is typically manga, anime, or video games—but certainly not always, as you can see below.
Here is a round up of some of the complete matches from over the years. Some of them, such as the top comparison, have also appeared on Western sites. Some have not.