News avatars are proliferating on social media and experts say they will spread as the technology becomes more accessible

The news presenter has a deeply uncanny air as he delivers a partisan and pejorative message in Mandarin: Taiwan’s outgoing president, Tsai Ing-wen, is as effective as limp spinach, her period in office beset by economic under performance, social problems and protests.

“Water spinach looks at water spinach. Turns out that water spinach isn’t just a name,” says the presenter, in an extended metaphor about Tsai being “Hollow Tsai” – a pun related to the Mandarin word for water spinach.