Among the accusations involving another woman – a fellow actor – is that Robertson assaulted, threatened and harassed her.
Keenan recalled how the witness spoke of him “spitting out words” and being “disproportionately angry” at times.
The prosecutor also reminded jurors of claims Robertson sent items – including Graze snack boxes – to the 40 year-old at theatres where she was performing after they broke up.
Keenan said: “You may ask what is so bad at sending someone gifts.
“But, if you are look at the whole evidence, if it is from someone who is violent and controlling then, I suggest, it takes on a far more sinister twist.”
The prosecutor said the accusations involving the final woman were less serious.
But he alleged she was still subjected to “confusing behaviour” and claims Robertson also pushed her while they were staying at his hut in Carbeth, Stirlingshire.
Regarding Robertson’s own testimony, Keenan said his denials and account of what happened included details “thought up on the hoof to explain difficult scenarios”.
He added if the actor was correct then “four unconnected individuals”, other than their link to him, had “made-up” allegations.
“I urge you to reject the evidence of him as wholly incredible and unreliable,” he said.
The prosecutor said his “denials ring hollow when contrasted with their accounts”.