They don't seem to be in any pain, and just get paralyzed, which is arguably a bit of a cop-out.
Honestly, I'm kinda surprised they got away with showing Kenge literally bite them on screen at all, multiple times even. And the bites were shown to have a bit of a side-effect as well. Maybe they didn't really show the Guard being in agonizing pain or anything, but they didn't exactly rule out that they weren't experiencing any pain, either.
The episode was alright. There weren't any huge flaws, but I felt it had an unusual amount of things to nitpick about. Such as: If Ushari always knew Kenge, then why wasn't he brought in sooner/more often to deal with The Lion Guard? In fact, with how independent and angry Kenge seemed, how did they convince him to join them in the first place? I was hoping we'd get a bit of a break from Scar, but he was only gone for one episode and now he's back again. They're really overusing him. I guess the good thing is Mufasa is being overused less now, thanks to Scar. The song felt kinda misplaced, in the episode. Dunno, just felt very sudden and out of place as far as the episode goes. Once I saw the entire episode, I get why they placed it there, but honestly, it felt too early into the episode. Another thing is, why didn't Kion just use the Roar immediately when meeting Kenge. Nothing was stopping him. And neither was anything stopping the hyenas from taking out the Guard completely once they were paralysed. Also, why didn't the hyenas just break the melons if they wanted to get rid of them? I know Janja and his pals aren't the brightest, but it was Scar's plan. Why didn't he tell the hyenas if they can't get the melons to the Outlands, just break them? Seems like something he'd be selfish enough to do. Wished for a bit more complaining from Fuli. Moving fast is such a big part of her character that seems she'd be far more annoyed/emotionally damaged from not being able to move AT ALL. At least we got that small bit with Bunga annoying her about it. Speaking of Bunga, yeah, the fart bit was kind of another facepalm moment, but at least they're using it realistically and as a meaningful offense with him. Finally, I honestly wish that the heynas would've won this battle. It would be refreshing to see the Guard lose for once, and since there's clear continuation with the story now, it's something they could easily do. Right now, it just feels like the Guard is ALWAYS stopping the hyneas/Scar's plans and the overall big story isn't really going anywhere or gaining any momentum.
On the good side of things: Despite the song feeling oddly placed within the episode, it was enjoyable. Nothing too special, but had a nice prog vibe to it. Kenge seemed like an actual threat; the biggest one since Zira. Of course, the Roar is so overpowered no villain really feels like an actual threat, but he definitely seemed more so than perhaps anyone else before. I think he's the first one to be able to actually stand up against the Guard and even take them out. If it had been just him alone against them, without the rest of the plan having to take place, you could say he basically won. Was cool to see Makini again and actually be a REALLY big help. She's progressed well as a character. They've toned her goofiness down from an "easily could become annoying" level, to actual fun level that makes for good comedy. Just like they did with Bunga. I feel they've done it better with her, though. Fuli looked adorable with the flower crown. I'm glad Bunga's immunity to venom was brought in again. It establishes nice continuity and also makes it out to be a good, useful thing this time around. Also, I think Bunga's small song at that one point near the end was a reference to "Under the Sea" from The Little Mermaid, but I could be wrong. Sounded like it. Btw, I wonder what Kenge's thing with being called little is? Seems he has some past traumas about it. xD
As far as the animation in this episode goes, I feel like they've pretty much got it nailed down by this point in the series. It's improved a lot. Only thing that still needs a bit of work is just the regular walking animations. While the walking animations have improved a lot, they still often look like the characters are walking on ice or something; their steps don't seem to have any grip. And they seem very weightless as they walk. The action scenes could also still be improved quite a bit, but they've gotten a lot better as well. Other than that, the animation is really good now.