I wasnt able to find many splatoon keycaps, and this was a pretty simple first model! not sure how id managed it but the left/right squids and up/down octos have thinner lines on the texture on top of the keycap so i have included the original scale squid and octo in case you want to resize them or put them in a different angle.

If you want to get these to turn out better you will need to play with the slicer settings- on bambu studio the change i made to get them to work was to go to wall generator under the quality tab and change it from classic to arachne