What is the best process to animate 2 or 3 characters on the same scene???

May i have to animate one by one, and save theme with a green background, and treat them in adobe premiere (for example),with chroma keying and i add a background in adobe.

Maybe there is a better "strategy".....I don't know

Thank you for your advices and tips.

Yes, blue/green screening - that exactly is the strategy.

Forum member catcha has recently posted a great example of no less than five animated characters in one scene. :cool:

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thank you RKD for the answer.