Mars sits next to 4 phonetic neighbors — Ares, Marks, and Marcus are the closest matches by sound. Most share Mars's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"god of war"
"God has remembered"
"new house, bright"
"wooded land"
"supplanter, he who follows at the heel"
"universal, whole"
"brotherly, genuine"
"divine, of Zeus"
"deer-friend, divine spear"
"handsome, fair one"
"handsome, radiant one"
"from the place of wide waters"
"descendant of Riagán"
"friend, cherished person"
"army guard, protecting warrior"
"jaybird + euphonic suffix"
"Harry's son, son of the ruler"
"wolf's shield"
"Chinese unicorn, bringer of good fortune"
"headland, promontory"
"messenger of God"
Similar sound: These names share phonetic patterns with Mars — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin/Roman origins, giving them the same cultural heritage as Mars.
Rhythm: Mars is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.