As stated in the thread-title, I'm wondering whether it was ever specified which Claw from Phantasy Star IV, is the same as Rika's Claw in Phantasy Star Online?

It was featured in a commercial and an art-book, but I don't remember any point in Phantasy Star IV, where that huge mechanical arm was ever highlighted, or made to be the "definitibe" weapon associated with Rika.

PSIV Commercial that features the Claw Arm:

https://www.youtube.com/watch?v=ydM-LhVF_xQ

PSO-W's database entry for Rika's Claw:

http://www.pso-world.com/items.php?o...icle&artid=521

PSIV Art-Book illustration that features the Claw Arm:
https://segaretro.org/images/thumb/5...ver2_Japan.jpg

Or was this Claw Arm only an out-of-game idea that never had in-game relevance?