[fmic22]

What type of evidence is needed to prove aggrevated menacing and robbery.

[JudyKayTee]

A witness is always nice; locating the "goods" is helpful; no alibi helps the other side; a criminal record makes you LOOK guilty; a confession always helps.

I'm out of ideas.

Oh, if the other person is more believable on the stand than you are, that's helpful to the prosecution.

[Fr_Chuck]

Each state has its own laws, so what may or may not be required, even what may or may not be allowed for evidence may vary by state. ( if in the US)

In general, It was intended ( planned) and at least for here, items were taken by force or threat of force.