Ratchet and Clank: Rift Apart's Rivet Once Had a Very Different, Very Confusing Name

gamerant.com:

Ratchet & Clank: Rift Apart doesn't just feature the titular Ratchet and Clank on a new adventure. The game also introduces a new Lombax to the mix in the form of Rivet, an alternate universe version of Ratchet, along with her Clank-equivalent, Kit. Rivet and Kit have proven to be quite popular new additions to the franchise's lore, with many Ratchet & Clank: Rift Apart fans praising their story arcs and characterization. However, it seems that there was once a time when Rivet would have had a very different and very confusing name.

Speaking at GDC (as reported by IGN), Insomniac developer Mark Stuart revealed that Rivet originally had a very different name. When Rivet was first conceived, she was known was Ratchette, though that was eventually shortened to just «Ratchet.» The logic was that since Rivet is an alternate universe version of Ratchet, it would make sense for them to have the same name. However, this made writing the game's story confusing for the developers.

Ratchet and Clank: Rift Apart is Hiding One Last Easter Egg

The next name that the team came up with for Rivet was «Gadget,» but then they finally landed on «Rivet.» It's easy to see how Rivet having the name «Ratchet» would've hurt the character's ability to break out in the fanbase, as it would've been difficult to discuss her in any context outside of being a female version of Ratchet, so it was likely the right call for Insomniac to go with «Rivet» instead.

With Rivet and Kit proving so popular, it will be interesting to see if they will ever get their own spin-off game down the line. As it stands, Insomniac hasn't announced any plans to expand Ratchet & Clank: Rift Apart with DLC or expansions, so it seems fans have to be content with the base game