This one is probably the worst so far with gore, though it's not too descriptive. Mild mention of human blood. Take a little caution with this one.

Arcee was hesitant to let you or Jack in. Both of you had come to the base together, you being June's sibling. You found out at the same time Jack had, with the decepticons almost killing you both.

You were a fairly chill, laid back person who Arcee got along well with. Your sarcastic personality reminded her a lot of Cliffjumper. You were hesitant to stay in the base, knowing that there was a whole war going on. You didn't want to be involved in that at all. Jack managed to convince you to stay though, much to Arcee's joy. When June was angry with Jack for 'getting a motorcycle' you calmed her down. "Jack isn't a little kid anymore, June. He paid for the bike, and I'm sure he'll be responsible." 

Arcee often takes you out on drives- mostly because you're an adult and you're allowed to go out at night (which is her favorite time to go out). On missions, she'll keep you close to her at all times. She refuses to ever lose another partner. 

On one mission you encountered a fierce Decepticon called Viceviper. The seeker was new to Earth but not new to Arcee. Their fight was vicious as they exchanged blow after blow on each other. As soon as one would get the upper hand, the other would land a devastating blow.

Arcee eventually fell to the ground as Viceviper landed a harsh kick to her middle. Viceviper let out a manic giggle. "Well Arcee, I always knew we'd end up like this. I've waited for this day for millions of years!"

Arcee growled at the bot and tried to stand, but Viceviper slammed her foot down onto Arcee's middle. You watched in horror as Viceviper raised up her blaster and aimed it at Arcee's spark chamber. Before you could register what you were doing, you leaned down to the ground and scooped up a fairly big rock. Using all of the strength you could, you whipped it at the con'. A loud clang sounded from the Viceviper's armor. She turned her head to see the rock falling. As soon as her eyes landed on you, a wicked grin set on her face. "Arcee! You have a little pet."

 Viceviper kicked Arcee down again and began making her way towards you. You backed away in fear. You looked at Arcee who was trying to force herself up from the ground. She was clearly in a lot of pain but was trying to save you. That was when you decided that you wouldn't back down from this Decepticon. You looked up at her with a fierce glare on your face. "Don't you dare lay a hand on her again!" You shouted.

Viceviper howled with laughter, "Oh? And what are you gonna do about it? You little fleshbag?" You took your pocket knife out of your shorts and aimed it at her. "I may be small, but I'm not to be messed with. So come on, try me!" Viceviper laughed and reached down to grab you. When she did, you dodged and aimed for the spot between her armor plates- right to her fuel lines. She yelped in pain as she reared back and checked her arm. 

A new fiery rage erupted while she cursed aloud at you. She swipes at you with a new rage as you dodge again and climb onto her arm. Arcee watches in horror as you dangle from Viceviper's arm. She watches as you struggle to climb to her shoulder, stabbing her fuel lines as you go. The decepticon falls to her knees as she tries to bat at you. After four swipes, she manages to throw you off. 

Arcee is filled with a blind rage when she sees your body collide with a tree. Her mind goes blank as she runs towards Viceviper. She rips at her arms, managing to tear it off. As a final blow, her clawed servo reached through her enemy's chest, ripping her spark out. Viceviper fell to the ground in a dead heap. Energon leaked through her wounds, covering the ground a bright neon blue. Arcee should be horrified by what she'd just done- but she isn't. 

She quickly dropped to her knees by your side. You were unconscious, and bleeding lightly from your head. She wiped her hands of the energon in the nearby grass and carefully picked you up. "Ratchet, I need a groundbridge now! (Y/N)'s been hurt." Ratchet quickly opened the bridge and took you from Arcee.

He laid you on a medical cot and began looking over your injuries. Optimus walked over to Arcee and placed a gentle servo on her shoulder. "Arcee, what happened? Are you alright?" 

"I'm fine," she pushed his servo off. "Ratchet, are they okay?" 

Ratchet hums at her, nodding. "I think that they just have a mild head injury. They will be fine with some rest." Arcee vents with relief. 

She didn't leave your side until you woke up, where she apologized for not protecting you. You, of course, didn't blame her. You asked her what happened after you were knocked out, but she only told you "She won't hurt you ever again."

And she never will. No one ever will. Because if they ever try, she'll rip their beating sparks out and watch them bleed out.