Yes you can make either bio as long as you meet the requirements for those bios. If you don't then you can't make them. I will post below the requirements/restrictions for both Kisame and Yamato for you and if you.
For Kisame:
- You must be at least of kage rank in order to create a Kisame bio, since Kisame is considered a Bijuu without a tail.
- You must have been a member for at least 6 months.
- The member must then take a test given by Nexus. If failed, the member has to wait for a month to retake the test.
- Transformation restriction is only useable with kisame.
- Only one person may possess a Kisame biography at any given time. Current holder is /(I think that would be Goro Kaguya?)
If Goro is still the bio holder for Kisame then you cannot make him.
For Yamato:
- To make a Yamato bio the user needs to have started training in both water and earth elements and needs to be at least of S-jounin rank - 550 posts -
Now when you make the bio and it gets approved you do have to find a Sensei to teach you the jutsus.
