An elephant in the china shop.
More Hungarian Proverbs:
He makes an elephant out of a mosquito.Hungarian
He puts the dot on the i.
Hungarian
He guards it, him like his eyesight.
Hungarian
He treads downwards, on his subordinates and bows upwards, before his superiors.
Hungarian
The horse has to pull as the horse is also pulled.
Hungarian
The wolf, dog does not eat the winter.
Hungarian