What is Riku's keyblade called?

Riku wields many keyblades throughout the Kingdom Hearts series.

They are as follows:

-Soul Eater (used mainly in KH: CoM)

-Keyblade of People's Hearts (used towards the end of Kingdom Hearts)

-Oblivion (used in numerous fight scenes, mostly against Roxas)

-The Way to the Dawn (used by Riku in The World That Never Was in KH II)