För mer bevis på att Karkaroff är den fega, observera den här dialogrutan från Harry Potter och Dödshallarna kapitel 33. Dialogrutan är en flashback från några månader innan Dark Lord returnerar.
A whirl of colour, and now everything darkened, and Snape and Dumbledore stood a little apart in the Entrance Hall, while the last stragglers from the Yule Ball passed them on their way to bed.
‘Well?’ murmured Dumbledore.
‘Karkaroff's Mark is becoming darker too. He is panicking, he fears retribution; you know how much hep he gave the Ministry after the Dark Lord fell.’ Snape looked sideways at Dumbledore's crooked-nosed profile. ‘Karkaroff intends to flee if the Mark burns.’
‘Does he?’ said Dumbledore softly, as Fleur Delacour and Roger Davies came giggling in from the grounds. ‘And are you tempted to join him?’
‘No,’ said Snape, his black eyes on Fleur and Roger's retreating figures. ‘I am not such a coward.’
‘No,’ agreed Dumbledore. ‘You are a braver man by far than Igor Karkaroff. You know, I sometimes think we Sort too soon …’
He walked away, leaving Snape looking stricken …
Professor Snape och professor Dumbledore, båda tycker att Karkaroff är fegnen, och de är bland de människor som mest vet om den mörka herren, så det borde vara tillräckligt gott bevis för oss.