You're refering to Kovu from The Lion King 2: Simba's Pride movie. He is apparently the biological son of the lioness Zira who says Kovu was the last born in Scar's pride and hand-chosen by Scar to follow in his footsteps as the new king before Simba returned and killed Scar and exiled the rest. However, Scar is not Kovu's biological father - that point is made clear twice in the film. Scar only "took him in" as in kinda like adopted him as his son and heir.
The lion and lioness are the parents of the lion cub.
a lion cub
A baby lion is a Cub.
A young lion is called a lion cub.
A baby lion is called a cub
No
nala
Simba is a young male cub
A baby lion is referred to as a cub.
A lion baby is called a cub.
a baby lion is a cub
Kitten or Cub