Major Strasser (Conrad Veidt) represents the villain, who is against the hero, but Renault (Claude Rains) at times also acts as a villain (his manipulation of women in need of a exit visa, for instance).

The donor, who provides an object that has some magic property, is Ugati, who provides Rick with the letters of transit.

The dispatcher, who sends the hero on his way by providing a message, is hard to define, Renault kind of fills the role, as he tells Rick of Laslo's

4 an attempt to repair the damage of the disruption;

The letters are given to Laslo and Isla, so he can continue his resistance work.

4 an attempt to repair the damage of the disruption; Rick attempts to get Isla (the love of his life) back in the market, when he apologises for what he said when he was drunk in the bar, the night before, and asks her to visit him at the apartment above the saloon. Thinking at this point I suspect, that she left him because he was unsettled and on the run, concluding that now he has a stable life she might return to him. His attempt fails though, as she reveals Victor Laslo is her husband. Isla realises how much she has hurt Rick when his reaction to her pointing a gun at him is "Go ahead and shoot, you'll be doing me a favour", this leads to Rick giving her an opportunity to explain why she left Paris, an attempt by Isla to repair the damage she has done to Rick.

Some topics in this essay:
Victor Laslo, Rick Strasser, Goes Buy, Laslo Isla, LOVE STORY, Victor Isla, CASABLANCA THRILLER, Claude Rains, Tzvetan Todorov’s, Rick Blaine, victor laslo, laslo isla, repair damage, 2 disruption event, 3 recognition disruption, hero rick, 3 recognition, equilibrium letters, todorov’s theories, 5 return equilibrium, characters oppose, attempt repair damage, casablanca love, victor laslo isla, recognition disruption,