Mule

Mule can be a noun, a character who's express purpose is to hold items not being used by other characters, or as a verb, which means to transfer an item to storage.

Because Asheron's Call does not have in game banking or auction systems, the only way to transfer an item is in game with the character that holds the item. The item can be given to another player via drag and drop with the mouse. You can use a hotkey system that isn't commonly known about. You must first select the player or NPC that the item will be given to with the mouse, then click on the item in your inventory, then press the hotkey and the item will be given. Note that immediately after the item is given the game will autoselect the person/NPC you gave it to. This means that if you want to give another item, you do not need to click on the person again, just click on the next item and press the hotkey (and click next item and then hotkey for a 3rd item and so on). The particular key you use will need to be assigned, it is not assigned by default to prevent scamming people that don't understand what the hotkey does. To assign the hotkey, you must be in game, click the checkmark button in the lower right then click the Gameplay Options tab if it isn't already open. Select Configure Keyboard and click the UI tab and scroll down to the end of the Item Selection section and for Give Selected Object to Target assign the key of your choice.

You can also open a trade window with another player to transfer one or many items, double click another player to open the window (depending on your settings in (Character tab>>Other Players>>Drag Item to Player Opens Trade) dragging and dropping an item on another player will either give the item, or open a trade window first).

Before the trade window was introduced, and for players with a single account, there is also drop muling, which is simply dropping the item on the ground or in a chest, and then logging to another character to retrieve the item. This method is vulnerable to theft if someone else picks up the item, or true loss if you cannot log back in for any reason and the items decay or the landblock resets.