The Spaniard was standing in for Ilian Meslier, who has been dropped by new boss Sam Allardyce at Elland Road, as they face Newcastle in a crucial Premier League match.
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And after Junior Firpo conceded a penalty for handball, Robles tried his best to put Callum Wilson off.
That included roughing up the penalty spot, with referee Simon Hooper booked him for that.
But that did not stop the former Everton star, who tried to get in Wilson's head by approaching him.
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Hooper had to bark at the keeper to get back on his line, which he still did not comply with until the very last moment.
Wilson was unfazed, scoring his second penalty of the day to leave Leeds looking dangerously towards the drop.
Robles, beaten for the second time, was furious, launching the ball at the celebrating Newcastle players in another show of petulance that did not go down well with fans.
One fan said: "Joel Robles is if you ordered Emi Martinez off wish."
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Another tweeted: "I'd red card Robles for chucking the ball at them there - he's already took the p*** with the pen'."
And a third said: "Joel Robles looks like such a FOOL right now. All that taunting was terrible."
More will follow.
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