something like that?

Best regards, 

Jean-François

Nice work, thank you. Very timely for something I'm doing.
Just tried it for a bit and it works well, but what if I want to composite this on a background video, where I want just the text and the bubble's shape to be opaque? I ask as I know you like a challenge
With your user actor how do I make it look like this? I couldn't find the way to hide the intersection...

Woland, you are my hero!!! That was exactly what I was looking for: a real "izzy" solution! You made my day! ;o)

This was an interesting idea so I made a User Actor

By the way, this User Actor is built around two Shapes actors. It's just a Shapes actor making an oval and a Shapes actor making a triangle. White fill, black line, line size 4. Feed them into a Multimix and the lines disappear wherever you make the shapes overlap, which is why the Multimix actor is really the MVP in this chain of actors.

Here's a gif: https://recordit.co/cJ5vL1NXG2

File from the gif: simple-speech-bubble.izz

This was an interesting idea so I made a User Actor

speech-bubble-2023-01-17-3.2.6.izz

Heii Mark, thanks for the idea. Together with ComicLife it actually works well and is quick enough! ;o)

<p>For a life performance about a comic book I am looking for a way to imitate comic style speech bubbles in Isadora... preferable a solution, where I can modify the size of the bubble and point the "neck" towards my actors. Sorry, but my knowledge of json is limited. Any help would be appreciated!</p>

I would just make the shape that you want in a program like photoshop where you can create a transparent .png.
Use a picture player to place the shape on the stage, and you can use the projector controls to resize, and you can make the neck point in different directions by using the flip actor between the picture player and the projector.

HTH

Mark