[Tokkan]

Wow this thread has been dead for a while. Anyway heres some name origins for the Aswad.

Rad = A unit of measurement for radiation dose.
Lumen = A unit of measurement for luminous flux in the SI metric system.
Gal = A unit of measurement for acceleration in the CGS metric system, abbreviated from Galileo and named after Galileo Galilei.
Dyne = A unit of measurement for force in the CGS metric system. It is also a pun on the kanji 大 (dai/tai/oo) meaning big or great (in the context of size), which explains his size.

Edit:

Tomoe Marguerite - A tomoe is a Japanese abstract comma-like shape. Her overall hairstyle combines with her face to make the tomoe shape and the earring that holds the Cursed Obsidian to her ear is also shaped like a tomoe.