Permanently scowling cat goes viral online for her menacing expression (3)

As the next big feline celebrity, if Koyuki’s fame continues to grow, you could be seeing that sassy stare on memes and T-shirts fairly soon.

But whether or not Koyuki is a fitting feline successor to the Grumpy throne remains to be seen.

With a film on the way, and an upcoming waxwork in the San Francisco Madam Tussauds Museum, Grumpy Cat is sure not to go down without a fight.

Icy stare: Her permanent scowl and furrowed brow make her look majorly peeved

Not always angry; But her owner insists she is not always angry