Tumaini and Erevu are most likely Faika's siblings, however in the drama of their parents dying soon after their birth and trying to find a lioness willing to nurse them; no one quite remembers or paid much attention at the time.
Tumaini is the younger, and with the weaker mane. He, like his almost sister Kamili, is aggressive and is always up for a wrestle. Though, he is wimpy in an actual fight...while it isn't his strong point in the least Tumaini also enjoys spiritual things(it's joked about he is reincarnated from Jahidi).
Erevu is often tired. While he refuses to wrestle with the other cubs, he is the biggest and strongest of the four. He spends his time being a poster child, always obeying and helping out where he's needed even without being asked. He also has a bigger mane than Tumaini...always a one-upper eh?