English to Spanish Other Government / Politics Uso de “random” en referencia a un político

Buen martes para todos.
Estoy traduciendo un artículo en el que se usa varias veces el adjetivo “random” en referencia a una persona; este adjetivo puede traducirse al español como (1) aleatorio, al azar; (2) fortuito, casual o (3) sin orden, sin rumbo, por ejemplo.
En este caso he pensado en “improvisado”, pero sigo inseguro; agradezco ideas sobre cómo traducir “random” en las siguientes frases:

On January 25, two days after Random Guyidó declared himself President of Venezuela, the lack of planning in the U.S. coup attempt was already obvious

The little spontaneous support the Random Guyidó had in some parts of the population is already lessening

Over the same time the Random Guy will lose support. The party he nominally leads only won 20% of the votes.

Venezuelaanalysis just posted short interviews with Random Guyido supporters. They all sound frustrated and disappointed:
https://twitter.com/venanalysis/status/1096124587316834304

Therefore, the resistance to thievery is increasing. In case of Venezuela, the “revolutionaries”, including the Random Guy, have been trained by the late Gene’s best apostles, organisation Otpor, but it still has not worked out yet.
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De antemano, muy agradecido