"Constellar", known as "Sacred" (セイクリッド Seikuriddo or 세이크리드 Seikeulideu) in Japan and Korea, is an archetype of LIGHT-Attributemonsters which was introduced in Duel Terminal - Sacred Star Knights!!. Their team symbol is a golden eight-pointed star with a small circle behind it. The Xyz Monsters of the archetype, however, also have a larger, sun-like circle encasing the team symbol. This archetype so far has the second most diverse Xyz Monsters, ranging from Rank 3 to 6 and placing behind the Xyz-only archetype; "Number". This archetype is based on constellations. Each non-Xyz Monster has a symbol from the astrological Zodiac in their respective backgrounds, representing which constellation they're from.
The "lswarm" have spread across the entire Duel Terminal world, which is about to end due to their influence. Those who remain pray to the legend of the "Messiahs" passed down by the elders of each tribe. Are these "Constellar", self proclaimed knights or the heralds of the stars?
Each of the non-Xyz "Constellar" monsters is named after a prominent star or stars located in, and are themselves based on a constellation of the Ecliptic. All of these constellations are by definition also signs of the Zodiac.
Overall, the weakness of this archetype is that their monsters, except their Xyz Monsters, focus heavily on their own archetype, so it's best to not add too many non-"Constellar" monsters. The only non-"Constellar" monsters that are recommended would be "Honest" (a staple in "Light-based" Decks), "Cyber Dragon" (for a quick beatstick as well to lure out any traps), "Ghost Ship" (for rank 5 Xyz), and even to an extent "Cardcar D" for its amazing draw power. Another weakness is the fact that traps can severely cripple the Deck (though this applies to many Decks of today's meta, but especially to "Constellar" as it is hard for them to make a comeback since they do not have enough support yet), therefore it's recommended to main at least 2 "Royal Decree".
Aside from that, they have great potential in maintaining their toolbox strategy, keeping their hand always with a good amount of cards, which "Tragoedia" would fit, besides it's high attack, it can manipulate Levels for your non-"Constellar" Xyz (except "Ptolemy M7"), not to mention controlling your opponent's monsters, with this archetype that has various Levels.
Since most of their effects are centered towards efficient Xyz Summoning they themselves are very vulnerable and dependent on combos, so if they cannot perform a Xyz Summon then they can be put on a severe disadvantage provided the opponent summons something stronger, so a respectable amount of Spell and Traps to protect them is recommended.
All of the "Constellar" monsters have a similar armor style to the "Vylon" monsters.