Abilities are asked about, not agents
The questions here rarely name a character and ask what they do. They go the other way: here is an effect, tell us whose it is. Teleporting, healing a teammate back up, sealing an area with poison, leaving automated defences behind, watching a corridor without standing in it.
That direction is genuinely harder. In a match you react to the effect and only sometimes register who produced it, so plenty of experienced players know exactly what an ability does while blanking on the name attached to it.