Bundle is the grandfatherly type, worries about and is slightly indulgent with his 'kids', and pretty gentle and nice overall. His alt-mode is a Chinook-esque heavy lift helicopter. He is a /very/ good medic, but has correspondingly bad offensive capabilities that are about civilian level in strength. He mostly depends on speed (and cover from still-fighting squad mates) to get to an injured 'bot and out again.