MikuMikuDance

MikuMikuDance, abbreviated as MMD, is a freeware in which it allows the creation of animations, originally produced for the VOCALOID program with the character Hatsune Miku. The MikuMikuDance was programmed by Yu Higuchi (HiguchiM) and has undergone significant updates since its inception. Its elaboration was made for the Project of the Video of Promotion VOCALOID or in English VOCALOID Promotion Video Project by its initials "VPVP".

Change sizes in MMD
(This part is edited by someone who knows the subject).

Trivia

 * When this software is used in the GTS community, it is always done using animé figures. Obviously, because that's what this software was created for.

Source

 * https://es.wikipedia.org/wiki/MikuMikuDance