The people represented on this panel are known as the Just Judges, who are actually administrators and politicians.
This is the panel that was stolen in 1934. What you see today in Saint Bavo's cathedral is a 1939 copy by Jan van Der Veken. In spite of its quality, the attentive viewer can still spot the difference in colouring (see the rocks and the sky, for instance), while the copy also displays less depth than the originals alongside it.