In Greek mythology, Alastor is the trusty Achaean who, with Mecisteus son of Echius, twice bears wounded comrades — Teucer and Hypsenor — groaning to the hollow ships. The atlas keeps him distinct from the Alastor in Nestor's Pylian array and from the Lycian Alastor slain by Odysseus, though Wikipedia's Alastor article often conflates the bearer with the Pylian.
Adapted from Wikipedia, "Alastor" · CC BY-SA 4.0
I.Bearer of the wounded
In Iliad 8, when Teucer is struck and Ajax covers him with the shield, Mecisteus son of Echius and goodly Alastor carry the archer to the ships. In Iliad 13 the same pair lift groaning Hypsenor from the throng after he falls before the wall.
Wikipedia lists these carrying scenes under the Pylian Alastor of Iliad 4; the atlas stages the bearer as alastor-achaean and the arrayed Pylian as alastor-pylian so each Homeric role keeps its own node.
II.Homonym care
The atlas id alastor-achaean is Mecisteus' comrade alone. Distinct from alastor-pylian, alastor-lycian, alastor-trojan, and Alastor as epithet of Zeus or vengeful daemon.