I think it looks like some kind of parasitic wasp, based on the long rear tubule thing (used for injecting eggs into the host, called an ovipositor) and the generally wasp-like body shape.

Don't worry, it doesn't sting or parasitize humans.
Very beneficial as they are pollinators, feeding on nectar, and also pest control, as depending on their host, is a major population control mechanism in some pest insect species. The reason Spotted Lantern Flies are so invasive in the Eastern USA is that in their home range, they are controlled by 2 species of parasitic wasp that control their spread, but these wasps haven't yet made the jump to or adapted to the region yet.

Half liter bug

Definitely a wasp. There are millions of species so it might be difficult to narrow it down.

It's Shakra

Looks like a flying ant. They come out seasonably in various parts of the world, mostly after rains. I didn’t know Ontario had ‘em (unless I’m mistaken).

It should have a sweet sickly smell associated with it.