Sir Jerro must be killed during the Underground Pass quest in order to collect the blue paladin's badge. He can be killed after the quest is complete. If the player talks to him before they have killed him, he will give them some supplies. If the player has killed him and tries to talk to him, he will attack the player.
Item Quantity Rarity GE market price Grimy marrentill 1 Common 17 Grimy guam leaf 1 Common 11 Grimy harralander 1 Uncommon 629 Grimy tarromin 1 Uncommon 162 Grimy dwarf weed 1 Rare 622 Grimy irit leaf 1 Rare 883 Grimy ranarr weed 1 Rare 7,905 Grimy lantadyme 1 Very rare 1,556 Grimy cadantine 1 Very rare 1,546 Grimy kwuarm 1 Very rare 1,220 Grimy avantoe 1 Rare 1,828
Armour, weapons and ammunition
Item Quantity Rarity GE market price Steel sword 1 Common 41 Steel longsword 1 Uncommon 114 Steel full helm 1 Uncommon 126 Water rune 30 Common 150 Blood rune 1 Rare 294
Item Quantity Rarity GE market price Coins 2; 8; 15; 48; 120 Common Not sold Iron bar 1 Common 101 Mithril bar 1 Rare 630 Steel bar 1 Uncommon 387 Clue scroll (medium) 1 Rare Not sold
- If you try to talk to him after completing Underground Pass, he will recognise you and exclaim, "You again... die Zamorakian scum!"