half of earths size
Mercury
No, Mars is only about half the size of Earth and it is a solid, rocky planet.
Pluto
First of all, Pluto is not a planet. It was considered a double planet because its largest moon Charon is half its size.
Pluto is about half the size of Mercury, which is the smallest "true" planet.
In terms of the actual size of the planet, you would want to no its diameter. In some cases the size is given as the radius, which is simply half the diameter.
Within our own solar system, some view Pluto as being a double planet with it's moon Charon (which is half it's size).
In approximation, Yes. It is just under half the size by a minute portion.Pluto Size: 9th largest planet - 2,306 kilometers - 0.181 EarthsCharon Size: 22nd largest body in the solar system - 1,205 kilometers - 0.094
There isn't a typical size planet
Mercury and Mars both have surface gravity that's about 38 % of the Earth's. They are the nearest to being half.
No, there isn't a Pokémon Movie called "Planet of the Regis."