However, you could consider these options, depending on the meaning you want to convey:
If you want to emphasize the sound of "Ruben":
* Rūpena: This uses the closest Hawaiian spelling for the name.
If you want to emphasize the meaning of "Ruben" (which means "Behold, a son"):
* Makana: This means "gift," which could be interpreted as a "gift of a son."
* Keiki: This means "child," which could be a simple and direct translation.
If you want to consider other similar names:
* Rūben: This would be a more traditional Hawaiian spelling of "Ruben."
Ultimately, the best way to choose a Hawaiian name for "Ruben" depends on your personal preference and what you want to emphasize. You could also consult with a Hawaiian language expert or cultural advisor for further guidance.