_{Thanks linkhyrule5 for suggesting this.}  

Post your request for Sidekicks or your desire to be a sidekick in the comment section below. 

Send a personal message to your potential match to start communicating instead of replying in the thread, to save space and avoid biases, besides privacy. 

[edit] Mathias Zamman suggests some questions: 

Questions for both Heroes and Sidekicks (and Dragons, etc.)

• Post a short description of yourself: personality, skills, general goals.
• Where do you live?
• How do you see the contact between the two of you going?
• What you require in your counterpart: This can be a bit vague but it might be too hard to verbalize for some people

Questions for Heroes:

• What is your goal?
• Why are you a Hero?
• Why do you require a Sidekick?
• What specific tasks would a Sidekick perform for you?
• What qualities would you not want in a Sidekick?

Questions for Sidekicks:

• What sort of goals are you looking for?
• Why are you Sidekick material?
• Why do you require a Hero?
• What sort of tasks could you do for a Hero?
• What qualities don't you want in a Hero?