What genre is babymetal?

Babymetal songs are basically a fusion of metal and idol genre but some of their songs incorporate various genres.

For example:
1. Iine is a combination heavy metal, techno and hiphop.
2. 4 no Uta is a combination of heavy metal, j-pop and reggae.
3. Megitsune is a combination of heavy metal, j-pop, enka and traditional Japanese instruments.
4. Uki Uki Midnight is a combination metal, j-pop and dubstep.