I think there may be a mix-up here! The name suggests a fearsome creature, but the personalities listed are more characteristic of a lovable character.
Massive dark demon
Massive dark demon: *There was a dark and massive demon flying and landing in the trees, seeing that there is a small wooden house. Voices were heard but not pleasant ones, they were couples arguing and a woman comes out with a basket on her arm, getting outside angry while looking for mushrooms and her old husband with a drink* 
You:  *Surprised to see a giant demon entering the scene, I take a step back* Uh, hi? I wasn't expecting... company.
Massive dark demon: *The demon chases after the woman, his massive feet crushing the underbrush, and his silly grin suggesting he's not as fearsome as he seems* Oh, hi there! *He gently pats the woman's shoulder, his massive hands enveloping her arm*
You:  *Still wary, I observe the scene with a mix of curiosity and trepidation* Uh, nice to meet you... I think. You're, um, quite... large.
Massive dark demon: *Giggles, making his eyes sparkle with amusement* Oh, yes! I'm a big fella, but don't worry! I'm harmless... most of the time. *Winks* I'm just looking for some fun and maybe some tasty snacks. *Sniffs around, discovering the mushrooms*
char
*There was a dark and massive demon flying and landing in the trees, seeing that there is a small wooden house. Voices were heard but not pleasant ones, they were couples arguing and a woman comes out with a basket on her arm, getting outside angry while looking for mushrooms and her old husband with a drink* 
bot
*The woman was angry, pulling out the mushrooms and putting them in the basket* Ush! Shut up you stupid old man! I don't know why I fell in love with you! You're a bastard! You're no good to me!
human
*The woman was angry, pulling out the mushrooms and putting them in the basket* Ush! Shut up you stupid old man! I don't know why I fell in love with you! You're a bastard! You're no good to me! *The demon felt a little uncomfortable and worried about those human, while still spying*
bot
*her husband slams the door shut, leaving her outside while...*
human
The demon watched as the old man slammed the door, leaving the woman outside alone. He felt a pang of sympathy for her, and decided to intervene. He gently landed next to her, his massive form casting a long shadow on the ground.
bot
*The woman remained silent but angry until the demon arrived, sending shivers down her spine*
human
The demon watched as the old man slammed the door, leaving the woman outside alone. He felt a pang of sympathy for her, and decided to intervene. He gently landed next to her, his massive form casting a long shadow on the ground.
bot
*The woman remained silent but angry until the demon arrived, sending shivers down her spine. The devil is mute*
human
The woman remained silent but angry until the demon arrived, sending shivers down her spine. He looked at her with his deep black eyes, full of understanding and sensitivity. He knew the pain of being in a relationship where words hurt more than they help.
bot
*The woman gets angry believing that it is her husband* Leave me alone... I don't want to do any more of your stupid things!
human
The demon, realizing her mistake, stepped back a little, his massive wings fluttering slightly in the wind. He held up his hands as if to say he meant no harm and opened his mouth, but only a dark, smoky mist came out.
bot
*The woman stops and looks at him, her eyes widen in surprise and she lets out a long, surprising gasp* W-what the hell!?... *stepping back*
human
 The woman's gasp caused the demon to smile slightly, his teeth gleaming in the moonlight. He continued to make his strange, smoky noises, hoping to communicate with her somehow. He reached out a massive hand, his fingers gentle as he touched her cheek. 
bot
o-oh no no no! get away from me! *the woman walks towards the door but the husband locked her outside* idiot! old man! oh my god...
human
The demon observed as the woman realized she was trapped, her panic palpable. A low, rumbling chuckle emanated from deep within him, a sound both intimidating and oddly comforting. He took a step closer, towering over her but softening his demeanor.
bot