The Quirky Cup Collective key monogram logo in a lilac and pink
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The Quirky Cup Collective Bad Blood pen features an intricate snake motif in red, gold and black and an engraved 'Bad Blood' text on the clip. The pen sits on a background of handwritten calligraphy notes and spilt red wax.
The Quirky Cup Collective Bad Blood pen features an intricate snake motif in red, gold and black and an engraved 'Bad Blood' text on the clip. A hand with long, intricate red nails holds the pen on a background of handwritten calligraphy notes and spilt red wax.
The Quirky Cup Collective Bad Blood pen features an intricate snake motif in red, gold and black. The pen sits on a background of handwritten calligraphy notes and spilt red wax.
The Quirky Cup Collective Bad Blood pen features an intricate snake motif in red, gold and black and an engraved 'Bad Blood' text on the clip. The pen sits on a background of handwritten calligraphy notes and spilt red wax.

Bad Blood Pen

$15.99

Meet the pen that your other pens wish didn’t exist.

A lilac star illustration thats part of The Quirky Cup Collective bookish branding.

0.5mm tip

A lilac star illustration thats part of The Quirky Cup Collective bookish branding.

Gel Rollerball

A lilac star illustration thats part of The Quirky Cup Collective bookish branding.

Replaceable ink cartridge

A lilac star illustration thats part of The Quirky Cup Collective bookish branding.

Waterproof Ink

With a pen tip that glides like scissors on wrapping paper and ink that feels like getting into freshly washed bed sheets with shaved legs, the Quirky pens are notorious for a reason. 

With a perfectly weighted barrel and adorable engravings on the pen clip and top lid, our pens are here to not only inspire, but potentially ruin every other pen for you ever. 

So whether you're writing your heart out in your journal, taking notes at a work meeting or penning the next best selling book, the Quirky pens are here to be your companion through thick and thin. 

Pen Details
  • 0.5mm Tip
  • Gel Rollerball
  • Black Ink
  • Waterproof Ink
  • Size: 14x1cm (5.5x0.39 inches)
  • Weight: 23g (.81oz)
  • Pen clip engraving: 'Bad Blood'
  • Replaceable Cartridge: Black, Red and Blue
  • Made in PRC
How to Use

Warning It is our personal recommendation that you keep this pen in a safe place and avoid sharing it with others. We have first hand experience of the addictiveness of these pens and that they have a tendency to "disappear". As the famous saying goes, keep your friends close but your Pen-emies closer. 

Pen Troubleshooting

What is a gel pen and how do I fix it when it's not working correctly?

Everything you need to know can be found here!

How to replace the Ink Cartridge

  1. Hold the gold tip of the pen (the nib end) and twist to open the pen casing. 
  2. Remove your old cartridge and dispose.
  3. Pop in your new cartridge 
  4. Screw the top back on!
  5. Ta daaaaa! 

Ps. If that spring pops out, make sure it goes back into the bottom of the barrel (tail end) before you pop your new cartridge in. 

Other Pen Cartridges

Our pens aren't specifically modelled after any popular brands, so we unfortunately don't have any other cartridge recommendations! You are more than welcome to search for one though :)

Shipping and Returns

All of your orders are packed with love and care by the Quirky Team and are shipped from Quirky HQ in Adelaide, South Australia.

See our full shipping and returns policies here.

Product Safety

Warning: Choking Hazard—Small parts. Not suitable for children under 3 years.

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Bad Blood Pen

$15.99 AUD

Get the Whole Set

Perfect your journaling experience, one piece at a time

  • 5 stars: 58 (85%)
  • 4 stars: 7 (10%)
  • 3 stars: 3 (4%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
S
Sofia D.

Gorgeously smooth writing! Adore!

H
Helena M.

This is, without hyperbole, the best pen I have ever used.

N
Natasha B.

Love this pen, it writes so well and the ink is good, plus it’s just stylish so I love it. Only downside, and the reason I’ve given it 4, not 5, stars, is because it’s somewhat heavy, so if you’re spilling the tea in your diary, your hand can cramp a bit (at least mine does)

T
Tamara A.

Great quality and has a nice weight to it. Writes well and love that it can be refilled.

V
Val V.

This pen is beautiful. I took a gamble and bought refills also, since the pens all had great reviews. I was so pleasantly surprised when I used it! The cap has a nice CLICK when you close it, and it's so smooth to write with. It's very fine point, which I found out is necessary for writing in the reading journal - the line spacing is very small.

B
Bayan A.

Love it 😍❤️

K
Katie H.

I really love this pen. It is very beautiful.

J
Joanna

This pen is stunning 😍

S
Seanacee

Very nice weight and writes beautifully.

S
Seanacee

Very nice weight and writes beautifully.

S
Stacy G.

Love the pen, nice weight. Writes well

G
Gemma W.

Lovely pen. Bonus points for being able to refill it when the ink runs out!

T
Tracey T.

smooth writing tool.

D
Deborah K.

Great quality pen! My husband loved it! He's left-handed and can confirm: left-handed smudge proof!

K
Kate B.

Beautiful pen and my favourite to write with

G
Georgia F.

Looks exactly like the picture; beautiful!

M
Melanie

Amazing pen & vibes

M
Melanie

Amazing pen & vibes

J
Jena R.

These are HANDS DOWN my favorite pens on the planet! Absolutely worth ordering from the US!

D
Danielle

Beautiful detail. I have had 4 pens now and they are my favourites to write with.

D
Danielle

Beautiful detail. I have had 4 pens now and they are my favourites to write with.

J
Jessica N.

Always a nice glide and great design!

J
Jan M.

Great pens beautiful to write with I would highly recommend bonus you can buy the refills as well
Great job

S
Sherlyn

El díseño de la pluma es precioso, el material increible y la tinta es una maravilla
Sin duda una de mis plumas favoritas❤️

S
Sherlyn

El díseño de la pluma es precioso, el material increible y la tinta es una maravilla
Sin duda una de mis plumas favoritas❤️

S
Shannay H.

So quirky!

N
Nay

So quirky!

C
Cristina T.

I’m really happy with this product overall. It was easy to use and did exactly what it promised. The quality feels solid and well-made.

Overall, I would definitely recommend this to anyone considering it, and I’d happily purchase it again.

K
Kayli R.

Amazing design and I love the weight it has, but I wish the ink flowed a little better. It might just be the one I got, but the ink is very spotty and doesn't write consistently for long periods. Still recommend getting as an avid pen collector!!

S
Sam S.

Super satisfying to write with! Love it.

K
Kayleigh H.H.

Absolutely stunning! If you are thinking about it do it!

E
Emily

Really beautiful design and it has a nice weight, ink flow is a little inconsistent so there's some gaps when I write but overall I really like it.

A lilac star illustration thats part of The Quirky Cup Collective bookish branding.
A lilac star illustration thats part of The Quirky Cup Collective bookish branding.
A lilac star illustration thats part of The Quirky Cup Collective bookish branding.
Colorful pens by The Quirky Cup Collective sit on an old letter with decorative elements. The victorian-inspired designs are perfectly paired with their romantasy aesthetic inspiration.
Brand illustration for The Quirky Cup Collective bookish branding of a sharp star mark in white.

You'll never be able to look at your biros the same way again.

Don't believe us? Count the reviews as our official receipts.

Bibliophile pen in the pastel pink and aqua Antoinette colour-way sits on a pink lace background surrounded by pearls. The french inspired gel pen features floral motifs inspired by a classic literature aesthetic and 'BIBLIOPHILE' etched into the pen clip.

For book lovers, journal keepers, and storytellers at heart.

Lush stationery, made to be adored.

The Quirky Cup Collective is where bookish indulgence meets everyday delight. Our stationery transforms the ordinary into something worth savoring, designed for those who find magic between the lines and inspiration in the margins.

We don’t just make journals and book accessories, we create companions for your stories. Every piece is crafted with intention, designed to inspire, and made to last. Whether you're chronicling your latest literary obsession or plotting your next creative masterpiece, your pages deserve the best.

Because here, it’s not just about putting pen to paper, it’s about celebrating the magic in the margins.

A lilac star illustration thats part of The Quirky Cup Collective bookish branding.
A lilac star illustration thats part of The Quirky Cup Collective bookish branding.
A lilac star illustration thats part of The Quirky Cup Collective bookish branding.
A lilac star illustration thats part of The Quirky Cup Collective bookish branding.