Thistleheart is a gray tom with darker gray legs and amber eyes.
- Thistlekit is born to Flowertail and Smallstorm, along with his sister, Briarkit. He is taken back to SkyClan by Flowertail. He is then nursed by Flowertail pretending to be Willowstep. He is lead to believe that Willowstep is his mother, and Cedarfang is his father. At first, he believes Smallstorm is his father, but Willowstep says that Smallstorm is his cousin, and that's why he said "I love you" to the kit. He believes Willowstep is his mother, but he still doesn't believe that Cedarfang loves him. He tells Cedarfang he has to PROVE his love, and he asks him to catch a plump squirrel sitting on a low branch. Cedarfang protests saying "You can't even eat Fresh-kill yet!" Thistlekit replies by saying "It'll feed the elders." Cedarfang gives in and catches him the squirrel, making Thistlekit overjoyed. He jumps on his father's back.
- He is later apprenticed. Thistlepaw's mentor is Cloudpelt.
- Thistlepaw is later made a warrior, Thistleheart.
- Willowstep: Living
- Cedarfang: Living
Smallstorm---Flowertail | --------------- | | Briarshade Thistleheart