Brambleclaw has no kits biologically, since it has been revealed that Squirrelflight did not bear him kits; instead, the kits were her sister Leafpool's.
However, his adopted kits (the aforementioned kits) would be Jayfeather, Lionblaze, and Hollyleaf (presumed deceased).
(Spoiler Alert!)
Brambleclaw doesn't have any kits...him and Squirrelflight are mates but Squirrelflight only raised Leafpool's kits; Jayfeather, Hollyleaf, and Lionblaze.
for one its leafpool not leafstorm and yes they do (lionblaze hollyleaf jayfeather) but everyone thinks that they are sqiurrelflights and brambleclaws kits (even brambleclaw) only squirrelflight leafpool and crowfeather know that though.
Squirrelflight did not have any kits of her own. She raised Leafpool's kits, Jayfeather, Lionblaze, and Hollyleaf, as her own to protect her sister's secret that she had broken the warrior code by having a litter of kits.
Their kits where believed to be jaykit/paw/feather hollykit/paw/leaf and lionkit/paw/blaze, but they are really leafpool and crowfeathers kits. Squirrelflight lied and told the clan that they where her kits and not leafpools because the kits were half clan and leafpool was a medicine cat. But hollyleaf died when the tunnels collapsed while she was trying to run away from her clan to start a new life. Squirrelflight tells Ashfur that hollleaf,jayfeather,and lionblaze are not her kits because Ashfur was going to let them burn in a forest fire because he once loved Squirrelflight but she chose Brambleclaw over him so he said to her letting her kits die would hurt her in away.Then Squirrelflight tells Ashfur that they are not her kits and he wont hurt her by killing them. Later you find out that jayfeather and lionblaze are really Leafpools and Crowfeather of Wind Clan kits. Squirrelflight and Leafpool lied to protect Leafpools kits and Squirrelflight told everone that they where Squirrelflights and Brambleclaws kits. In Sunrise Leafpool resigns as medicine cat leaving jayfeather as a full medicine cat and Leafpool as a warrior.
I believe that sometime, yes they will. If not when they are alive, in StarClan. Cats always realize their mistakes in StarClan.
No, Hawkfrost and Brambleclaw are half-brothers. They share the same father, Tigerstar. Hawkfrost's mother is Sasha, while Brambleclaw's mother is Goldenflower.
No, she has kits with fireheart.
Spiderleg has three kits named Rosepetal, Toadstep, and Daisypetal.
Dovewing and Foxleap do not have kits together, nor become mates.
Moonflower's kits are Bluestar and Snowfur.
No, he doesn't have any kits.
Who are Fire Stars kits
As of yet, Lionblaze has no kits.