Do you think Harry could be scary at times? Like put actual fear into people? Because I think I remember some moments where Hermione was afraid of him or was a least kinda hesitant with him.
Like this quote here from HP and the Deathly Hallows:
“You never really tried!” she said hotly. “I don’t get it, Harry – do you like having this special connection or relationship or what – whatever – “
She faltered under the look he gave her as he stood up.
“Like it?” he said quietly. “Would you like it?”
“I – no – I’m sorry, Harry. I just didn’t mean – “
He literally just looked at her, stood, and she was over there stuttering and backing down.
Yes! OMG, yes! Harry can and is scary when he wants to be and I love him for it!
A few more examples that popped into my head:
“I haven’t finished with you, boy!”
“Get out of the way,” said Harry quietly.
“You’re going to stay here and explain how my son —”
“If you don’t get out of the way I’m going to jinx you,” said Harry, raising the wand.
“You can’t pull that one on me!” snarled Uncle Vernon. “I know you’re not allowed to use it outside that madhouse you call a school!”
“The madhouse has chucked me out,” said Harry. “So I can do whatever I like. You’ve got three seconds. One — two —”
Uncle Vernon reacts to him with anger, which is his fear response. But Harry is talking quietly and deliberately, he isn't shouting and Vernon shuts up and listens, not cutting Harry off with his shouts. Harry actually cuts him off speaking quietly and Vernon lets him. And Vernon lashes out, as he always does when it comes to magic — because it scares him. Harry scares him.
“Well, it’s like Hagrid said, they can look after themselves,” said Hermione impatiently, “and I suppose a teacher like Grubbly-Plank wouldn’t usually show them to us before N.E.W.T. level, but, well, they are very interesting, aren’t they? The way some people can see them and some can’t! I wish I could.”
“Do you?” Harry asked her quietly.
She looked horrorstruck.
“Oh Harry — I’m sorry — no, of course I don’t — that was a really stupid thing to say —”
Hermione stutters around Harry quite a bit. I think she is, like, concerned about him at all times at the back of her head a bit since it takes very little from him to rattle her. I'm not copying it here but you see it too when Harry shouts at her and Ron at the beginning of OotP, Ron argues back a bit, but Hermione gets incredibly rattled. Hermione doesn't deal with Harry's anger well. There are more scenes like the one you mentioned as well.
I'm re-reading Deathly Hallows right now and came upon this scene:
Somehow her [Hermione's] panic seemed to clear Harry’s head.
“Lock the door,” he told her, “and Ron, turn out the lights.”
He looked down at the paralyzed Dolohov, thinking fast as the lock clicked and Ron used the Deluminator to plunge the caf into darkness. Harry could hear the men who had jeered at Hermione earlier, yelling at another girl in the distance.
“What are we going to do with them?” Ron whispered to Harry through the dark; then, even more quietly, “Kill them? They’d kill us. They had a good go just now.”
Hermione shuddered and took a step backward. Harry shook his head.
“We just need to wipe their memories,” said Harry. “It’s better like that, it’ll throw them off the scent. If we killed them it’d be obvious we were here.”
“You’re the boss,” said Ron, sounding profoundly relieved. “But I’ve never done a Memory Charm.”
That needs to be talked about more.
Some people like to point at Remus telling Harry that "the time for Expeliarmos is over" as proof Harry isn't willing to kill, but this isn't true. Harry isn't willing to kill Stan Shunpike, whom he considers innocent, Harry was the calmest of the trio and very much considered killing the Death Eaters and chose not to for completely tactical and cold reasons, not ones of ethics or qualms about murder. And I love the dynamic this short scene portrays with the trio a lot. Like, Harry is calm under pressure and calls the shots, Ron offers a way to deal with things, and then Hermione actually executes the memory charms. And here too, when Hermione stepped back, she was scared of Harry (and Ron a little). She doesn't for a second think he wouldn't kill them if he thought it was the right thing to do. She stepped back because she was scared Harry would kill them.
“...Thank you!” said Mundungus, snatching the goblet out of Ron’s hand and stuffing it back into the case. “Well, I’ll see you all — OUCH!”
Harry had pinned Mundungus against the wall of the pub by the throat. Holding him fast with one hand, he pulled out his wand.
“Harry!” squealed Hermione.
“You took that from Sirius’s house,” said Harry, who was almost nose to nose with Mundungus and was breathing in an unpleasant smell of old tobacco and spirits. “That had the Black family crest on it.”
“I — no — what — ?” spluttered Mundungus, who was slowly turning purple.
“What did you do, go back the night he died and strip the place?” snarled Harry.
“I — no —”
“Give it to me!”
Harry lifts Mundungus and strangles him... and both Mundungus and Hermione are scared of him... because he is scary.
said Voldemort coldly, and though he could not see it, Harry pictured Bellatrix withdrawing a helpful hand. “The boy . . . Is he dead?”
There was complete silence in the clearing. Nobody approached Harry, but he felt their concentrated gaze; it seemed to press him harder into the ground, and he was terrified a finger or an eyelid might twitch.
“You,” said Voldemort, and there was a bang and a small shriek of pain. “Examine him. Tell me whether he is dead.”
Harry did not know who had been sent to verify. He could only lie there, with his heart thumping traitorously, and wait to be examined, but at the same time noting, small comfort though it was, that Voldemort was wary of approaching him, that Voldemort suspected that all had not gone to plan. . . .
Voldemort is outright scared of Harry and isn't willing to come near him to check if he's dead...
Like, I am not a fan of the weaker, softer fanon version of Harry James Potter that I see on occasion (obviously everyone can do what they want, I just personally don't like it much when he's portrayed as small and submissive as if Harry has ever submitted in his life). He is not as tall as Ron, but he isn't short either (the same height as James, so likely around 6 feet), he is physically capable of lifting Mundungus even without magic with a single hand and he is so magically capable (more than almost every other character, bar exceptions like Dumbledore, Voldemort, and Snape). No wonder he can be scary, both physically and magically. And yes, Hermione is outright scared of Harry at times. So are other characters.
So, yeah, I strongly agree, Harry can definitely scare people if he wants to, and sometimes even when he doesn't. He seems to have an intimidation factor he isn't fully aware of and therefore doesn't notice all that much.
