[quote]Meanwhile, the series' main villain, a teenage hyena named Janja (Andrew Kishino), doesn't pose nearly the same threat as, say, Scar or Zira; mainly, he just gets laughed out by his henchmen while various insects crawl all over him
(...)
the special lacks a compelling villain -- although young kids will still likely enjoy the special.[/quote]
I disagree with that.
Janja is, like he said, a young hyena, much like a troublemaker bully, not an actual evil villain like Scar and it's not wrong. This is what he meant to be from the start.
The point of Return Of The Roar is not "good guys fight the bad guy". It's mainly about learning the idea of Lion Guard and Kion and his non-lion team becoming protectors of Pridelands. So Janja's presence in the movie is just a push foward for the upcoming Lion Guard to team up and prove their worth while others (Simba, Kiara) doubt them.
I think Janja will be fleshed out in the show that will have more "good vs. bad" plot construction.