I think: curiosity as a drive, analytical skills to follow through, and documentation skills to finish off. 

Hello,

Patience, being stubborn, not easily giving up, acceptance fo the results whatever they are, honesty, being thorough, and so on....

Regards, Witold

To begin with research is consistent challenge and it needs to be persistent, dedicated to the work, follow the systematic steps of research, accept the findings as it is.

Honesty, scholarship, curiosity and tenacity

My teachers in Egypt described the good among us as peasants of knowledge

Rational

Excellent

Self-motivated

Exciting

Ambitious

Responsible

Curious

Honest

Energetic

Righteous

In addition to the characteristics already mentioned, a researcher should first and foremost be a good reader.

Leadership, self-motivation, stress tolerance, have time to do research, good reader, and patience. 

Thanks to All for taking interest in my question.

Ability to think and hard-work

In Researcher , what characteristics do you think the main ?

My answer to this question is same as my answer found in this RG link i.e. Passion & Perseverance.  Wishing you all the best.

https://www.researchgate.net/post/Qualities_of_good_researcher/1

I would include almost all of the above, In addition, I might add innovative, as in exploration of improved techniques.

Thanks

Innovative, curious , passionate and hardworking 

Intellectual curiosity, motivation and persistence.

Creativity, Power to think and Visualize, Analytical Power, Patience, Domain Knowledge and Zeal to express new things