Character based on my favourite historical art series: Knights vs giant snails vs bipedal rabbits. And in general medieval manuscrypt doodles.
Filiptos is a rabbit knight, with unusual for the job jester hat. That's actualy not a hat, but magical slug-like creature that contorls flow and the speed of time. It can create time-bubbles, slowing attackers or making 8-hours sleep last 6 seconds. It seems to understand thoughts of person wearing it, not always following them though. Filiptos is almost deaf due to ears being cut off in a battle, hat helps hide this, and slows people when they speak, making lips reading easier, and maybe hats translates it too? Filip sometimes has thoughts that don't seem to belong to him. It's a partnership beneficial for both site, hat is absurdly shaped and so slow it needs to use time powers everywhere to get enough food, and that's quite exhausting, so free ride and food on knights head is very power-saving.