Well, honey, if we're talking about the Warriors series by Erin Hunter, the cat with the most kits is Leafpool. She popped out three little bundles of joy: Jayfeather, Hollyleaf, and Lionblaze. So, there you have it, the queen of kits in the Warriors world.
In each Clan of the Warriors series, queens (pregnant she-cats or those with newly born kits) are the primary caregivers for kits who inhabit the nursery. However the protection of all cats in the Clan, including kits, falls under the responsibility of the warriors and apprentices in the Clan.
As of the latest book in the series she has not gained a mate or kits.
She has 3 kits. Brairkit, Bumblekit, and Blossomkit. millie and graystripe have 3 kits. brairkit,bumblekit,and blossomkit!!!there adorable!!![in my head]
Medicine Cat
No, Spottedleaf did not have any kits in the Warriors series.
Not yet.
Kits
No, Mousefur never had any kits in the Warriors series. She was unable to have kits due to infertility.
Millie had her kits in the book "Millie's Story," which is an installment in the Warriors series by Erin Hunter.
They are not allowed to have a mate and kits.
Jaykit, Lionkit and Hollykit
No she will never have kits because she died in sunrise and she never had a mate