What is the strongest bugs & spider?
By fighting power, the Colossal Squid tops the bugs & spiders with a power index of 57.5, followed by the Giant Squid (52.8) and the Cuttlefish (48.9).
Which bugs & spiders are S tier?
None reach S tier (power index 72+). The best are Colossal Squid, Giant Squid, Cuttlefish.
How is this tier list made?
Every animal has six research-based ratings from 0 to 100. The power index weighs them: attack 28%, defense 25%, agility 16%, stamina 14%, special 10%, intelligence 7%. Tiers use fixed cutoffs, not quotas.
Is this pound-for-pound?
No. Ratings are absolute: a bullet ant can be incredible for its size and still rank far below a wolf, which is why small animals sit in the lower tiers.
Animal BattleStats 
